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Exam 2
A&P for Vet Techs
214
Veterinary Medicine
Undergraduate 1
10/09/2022

Additional Veterinary Medicine Flashcards

 


 

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Term
Tissue
Definition
cells of similar types are clustered together in the body to perform certain functions
Term
What are the 4 types of tissues
Definition
epithelial, connective, nervous, muscle
Term
What gross anatomy?
Definition
study of structures that can be seen with the naked eyes
Term
What is microscopic anatomy?
Definition
study of the microscopic structures of tissues and organs (histology)
Term
What are the functions of epithelial tissue?
Definition
Protects, covers, lines, filters, absorbs nutrients, sensory input, secretions, excretions
Term
Common characteristics of epithelial?
Definition
Polar (basal surface and apical surface), junctional complexes, avascular, innervated
Term
Junctional complexes
Definition
bring cells close together for no room for extracellular matrix
Term
What are the 4 cellular attachments?
Definition
Tight junction, desmosome, gap junctions, basement membrane
Term
Examples of surface specialization
Definition
smooth, microvilli, brush border, cilia, keratin
Term
How are epithelia classified?
Definition
Number of layers of cells (simple vs. stratified) and shape of cells (squamous vs. cuboidal vs. columnar)
Term
Where is simple squamous epithelium?
Definition
Found lining surfaces involved in either passage of either gas or liquid (mesothelium and endothelium)
Term
Where is simple cuboidal epithelium?
Definition
found in areas of secretion and absorption (glands)
Term
Where is simple columnar epithelium?
Definition
goblet cells and absorptive cells associated with absorption and secretion
Term
Where is stratified squamous epithelium?
Definition
found in mouth, esophagus, skin (protects underlying tissues)
Term
Where is stratified cuboidal epithelium?
Definition
found along large excretory ducts (sweat glands, mammary glands, salivary glands)
Term
Where is stratified columnar epithelium?
Definition
found in respiratory system, digestive system, and reproductive system
Term
What is pseudostratified epithelium?
Definition
not truly stratified cells found in respiratory tract and portions of male reproductive tract
Term
What is transitional squamous epithelium? basal layer of cuboidal or columnar cells and the superficial layer of squamous cells. Found in ureters, urethra, and bladder
Definition
Term
What are glands?
Definition
Cells or groups of cells that manufacture and discharge a secretion
Term
How are glands classified?
Definition
Presence or absence of ducts, number of cells, shape of secreting ducts, glandular structure, type of secretion, way secretion is stored and discharges
Term
What are endocrine glands?
Definition
Produce and secrete hormones into bloodstream or lymphatic system
Term
Examples of endocrine glands?
Definition
Pituitary and adrenal glands
Term
What are exocrine glands?
Definition
Possess ducts and discharge and secrete into local areas
Term
What is the exception for exocrine glands?
Definition
Goblet cell
Term
What are other examples of exocrine glands?
Definition
Hepatoid, musk, sweat, salivary, liver, pancreas glands
Term
Simple ducts
Definition
non branched
Term
Compound ducts
Definition
branched with a single opening to the outside
Term
Tubular ducts
Definition
long channel of even width
Term
Alveolar ducts
Definition
long channel with rounded sac at end
Term
Tubuloalveolar ducts
Definition
both tubular and alveolar
Term
Merocrine Ducts
Definition
secretory cells remain intact
Term
Apocrine duct
Definition
glands store their secretions, top part of cell is released into the duct system
Term
Holocrine ducts
Definition
entire cell is destroyed in the act of releasing its product
Term
Serous secretion
Definition
watery, high concentration of enzymes
Term
Mucous
Definition
secretion thick, viscous, composed of glycoproteins
Term
Mixed exocrine glands
Definition
both serous and mucous components
Term
Functions of connective tissue
Definition
metabolic and structural connections, protection, isolation for the body, reserve for energy, framework to support the body, transportation, healing process
Term
Characteristics of connective tissue
Definition
most abundant, vascularized
Term
Components of connective tissue
Definition
ground substance, extracellular fibers, and reticular fibers
Term
What does ground substances do?
Definition
Medium which cells exchange nutrients and waste with blood
Term
What are extracellular fibers?
Definition
Collagenous fibers, that surround organs and produce tendons and ligaments
Term
What are reticular fibers?
Definition
Thin, delicate branched networks of collagen that provide support for organs such as exocrine glands, lymph nodes, spleen, bone marrow, and liver
Term
Where are elastic fibers located?
Definition
Vocal cords, lungs, skin, walls of blood vessels (tissues subject to stretching)
Term
Two major cell types
Definition
fixed cell and transient cell
Term
Fixed cells
Definition
remain in connective tissue and is involve in the production and maintenance of matrix
Term
Fixed cell examples
Definition
fibroblast, chondroblast, osteoblast, adipocyte, reticular cell
Term
Transient cell
Definition
Passes in and out of connective tissue (diapedesis), and is involved in the repair and protection of tissue
Term
Examples of Transient cells
Definition
leukocytes, macrophages, mast cells
Term
Examples of connective tissue
Definition
blood, tendons, fat, cartilage, bone
Term
What are the 3 types of loose connective tissue?
Definition
Areolar, adipose, and reticular
Term
What is the function of Areolar tissue?
Definition
Surrounds and supports, provides nutrients, present in mucous membranes
Term
What are the 2 types of adipose tissue?
Definition
White and brown adipose
Term
What is the function of adipose tissue?
Definition
Energy storehouse, thermal insulator, mechanical shock absorber
Term
Where is reticular tissue found?
Definition
Spleen, lymph nodes, bone marrow
Term
Where is dense regular tissue found?
Definition
Tendons, ligaments, and sheets of fascia
Term
Where is dense irregular tissue found?
Definition
Dermis of skin and fibrous coverings of organs (kidney, spleen, testes, liver)
Term
Where is elastic tissue found?
Definition
Spaces between vertebrae, body regions that require stretching, ligaments, wall of arteries, stomach, bronchi, bladder, heart.
Term
What is cartilage?
Definition
It is innervated, avascular and more flexible than bone an dis based off the fibers in the matrix.
Term
What cells make up cartilage? Chondrocytes (found in lacunae)
Definition
Term
What are the 3 types of cartilage?
Definition
Hyaline (most common), elastic, and fibrocartilage
Term
Where is hyaline cartilage located?
Definition
Most of embryonic skeleton, tracheal rings, auricular cartilage, growth plates of long bones
Term
Elastic Cartilage
Definition
flexible and is found in the epiglottis of larynx, and external ears of animals
Term
Location of Fibrocartilage
Definition
between vertebrae of spine, between bones in pelvis, knee joint
Term
Osseous connective tissue
Definition
bone
Term
Types of blood cells
Definition
erythrocytes, leukocytes, thrombocytes (platelets)
Term
What are membranes?
Definition
Thin, protective layers of tissue linked together
Term
What are the 4 types of membranes?
Definition
Mucous membranes, serous membranes, cutaneous, synovial
Term
Mucous membranes
Definition
lines organs with connections to outside environment. Mucus contains water, electrolytes, and protein mucin.
Term
Serous membranes
Definition
produces thin, watery serosal fluid (transudate) found in the pleural fluid in thorax, peritoneal fluid in abdomen, and pericardial fluid around heart
Term
Cutaneous membranes
Definition
skin
Term
Synovial Membranes
Definition
lines cavities of joints
Term
Muscle
Definition
Fibrous cells designed for contraction
Term
Fiber composition consists of
Definition
actin and myosin
Term
What are the 3 types of muscles?
Definition
Skeletal, smooth, and cardiac
Term
Which type of muscle is voluntary?
Definition
Skeletal
Term
Which type of is involuntary?
Definition
Smooth and cardiac
Term
What does nervous tissue do?
Definition
Receive and transmit electrical signals throughout the body
Term
Where is nervous tissue found?
Definition
Brain, spinal cord, peripheral nerves
Term
What types of cells are found in the nervous tissue?
Definition
Neurons and neuroglial cells
Term
Neurons
Definition
longest cells in the body and consist of perikaryons, dendrites, and axon
Term
Neuroglial cell
Definition
function is to support neurons
Term
Inflammation
Definition
initial response to injury, releases histamine and heparin
Term
Goals of inflammation
Definition
limit further damage and eliminate harmful agents
Term
Organization of healing and tissue repair
Definition
granulation tissue, wound repair, phagocytosis, granulation tissue formed, collagen fibers, newly branched capillaries, proud flesh
Term
Regeneration of healing and tissue repair
Definition
epithelialization, epithelialization covers granulation tissue, scab is pushed off, granulation tissue becomes fibrous scar
Term
Wound healing classification
Definition
first intention and second intention
Term
First intention of wound healing
Definition
wound edges close, no granulation tissue and no scar
Term
Second intention of wound healing
Definition
wound edges separated from the other, scarring
Term
Re-epithelization
Definition
new epithelial tissue covers granulation tissue
Term
Wound contraction
Definition
the edges of the wound will shrink toward the center (hallmark of animal skin healing.
Term
Functions of Skin
Definition
covers and protects, prevents desiccation, reduces threat of injury, assists in maintenance of normal body temperature, excretes water, salt and organic wastes, receives and conveys sensory information, synthesizes vitamin D, and stores nutrients
Term
3 layers of the integument
Definition
epidermis, haired skin, non-haired skin
Term
Cells of the epidermis
Definition
keratinocytes, melanocytes, Langerhans cell, Merkel cell
Term
Components to haired skin
Definition
stratum corneum, stratum spinosum, stratum basale
Term
Tactile elevations
Definition
epidermal papillae, tylotrich hair, aid in perception of touch, very sensitive in some individuals
Term
5 layers of non-haired skin
Definition
same as haired skin but stratum granulosum, and stratum lucidum
Term
Dermis
Definition
largest layer also called the corium
Term
What is the composition of the dermis?
Definition
Fibrous and contains dense irregular connective tissue (collagen, elastin, and reticular fibers)
Term
Other components of the dermis
Definition
hair follicles, nerve endings (meissner
Term
2 layers of the dermis
Definition
Papillary layer and Reticular layer
Term
Papillary layer
Definition
outermost layer, contains dermal papillae, looping blood vessels, nerve endings, Meissner
Term
Reticular layer
Definition
makes up 80% of the dermis, contains parallel bundles of collagen fibers
Term
Subcutaneous layer
Definition
think layer, below dermis, and allows skin to move freely over underlying structures, also known as the hypoderm is.
Term
Composition of subcutaneous layer
Definition
loose layer of areolar tissue, fibers continuous with dermis, adipose tissue, blood vessels, lymphatic vessels, nerves
Term
Pigmentation
Definition
result of the presence or absence of melanin granules in extensions of melanocytes. Controlled by pituitary gland
Term
Paw Pads
Definition
tough, thick layers of fat and connective tissue, contain exocrine sweat glands, and all 5 epidermal layers are present
Term
Multiple foot pads
Definition
carpal pads, metacarpal and metatarsal, digital pads
Term
Planum nasale
Definition
top of nose (cats, pigs, sheep, dogs)
Term
Planum Nasolabial
Definition
muzzle in cows and horses, the upper lip
Term
Ergots
Definition
horny structures on the legs of equine, vestigial digits, found on plantar/palmar aspect of fetlock joints
Term
Chestnuts
Definition
dark horny structures o equines, thought to be digit 1, and found on the medial surfaces of the legs at the level of carpus and tarsus
Term
Cutaneous pouches
Definition
found in sheep, interdigital, infraorbital, inguinal
Term
Functions of hair
Definition
survival, regulate body temp, camouflage
Term
Composition of hair
Definition
medulla, cortex, cuticle
Term
Hair root sheath
Definition
internal epithelial root sheath, outer epithelial root sheath, dermal or connective tissue root sheath
Term
Parts of hair strands
Definition
shaft, root, hair follicle, papilla, matric, root hair plexus
Term
Hair
Definition
(poodles) have single hair per follicle
Term
Fur
Definition
has 3 compound follicles from the same epidermal fold in dogs
Term
Anagen
Definition
phase of growth
Term
Telophase
Definition
hair is falling out of follicle, bulb is resting, hair fall out
Term
Telogen effluvium
Definition
just after pregnancy when coat is blown
Term
Catagen
Definition
period of transition between anagen and telogen
Term
Hair color
Definition
pigment in cortex and medulla (color is based on amount and type of melanin)
Term
Types of hair
Definition
primary, secondary, tactile
Term
Primary hair
Definition
guard hairs, straight or arched, thicker and longer than secondary hairs, dominant hair in follicles
Term
Secondary hair
Definition
wool-type, softer and shorter
Term
Tactile hair
Definition
whiskers, sinus hairs, probes and feelers, throughout hair coat
Term
Erector pilli muscle
Definition
small, smooth muscle, attached to each hair follicle, and is activated by fight or flight
Term
Sebaceous glands
Definition
produces sebum and lanolin
Term
Sebum
Definition
oily, lipid substance that traps moisture, keeps skin and soft, pliant, waterproof, and antimicrobial
Term
Sweat glands
Definition
produces watery, transparent liquid, helps cool body (eccrine and apocrine)
Term
Tail gland
Definition
assists animals in identification of one another
Term
Anal sacs
Definition
located at 4 and 6, expressed during defecation and when animal is frightened
Term
Claws
Definition
hard outer coverings of distal digits and are non-retractable except in cats
Term
Functions of claws
Definition
traction, defense, catching prey
Term
Dewclaws
Definition
first digit in dogs and second and fifth (cows, pigs, sheep)
Term
Hoof
Definition
horny outer covering of digits of some animals (ungulates), hooves rest on tissue called corium
Term
Horns
Definition
mass of horny keratin that grow continuously and are structurally like hair
Term
What is important to know when dehorning?
Definition
Horns communicate directly with the frontal sinus
Term
Antlers
Definition
shed annually and dermal in origin, also lacks core and internal blood supply
Term
Characteristic of bone
Definition
second hardest substance in body and it is a connective tissue
Term
Types of bone cells
Definition
osteoblasts, osteocytes, and osteoclasts
Term
Osteoblasts
Definition
cells that form blood
Term
Osteocytes
Definition
mature bone cells found in lacunae
Term
Osteoclasts
Definition
cells destroy old bone to help in the process of remodeling
Term
Ossification
Definition
hardening of the matrix through calcium and other minerals being imbedded
Term
Lacunae
Definition
when the bone begins to mineralize some cells become trapped in the mineralized matrix and become osteocytes.
Term
Canaliculi
Definition
small canals that the cell extends through to receive oxygen, nutrients and relieve them of waste
Term
What are the functions of bone?
Definition
Support, protection, leverage, storage, and blood cell formation
Term
Hematopoiesis
Definition
formation of blood cells and its components
Term
What are the two types of bone?
Definition
Cancellous bone and compact bone
Term
Cancellous Bone
Definition
light and spongy and are the tiny
Term
Compact Bone
Definition
heavy and dense found in the outermost layer of long bones to give strength
Term
What does compact bones contain?
Definition
Blood vessels, lymph, nerves, canaliculi
Term
Periosteum
Definition
membrane that covers the outer surfaces of the bone
Term
Endosteum
Definition
membrane that lines hollow interior surfaces of the bone, is the layer in contact with bone marrow
Term
Volkmann
Definition
channels through the bone matric that contain blood vessels and interconnect with Haversian system
Term
Nutrient Foramina
Definition
large channels in large in long bones that carry blood in and out of bone marrow (resembles a fracture on X-ray)
Term
Intramembranous bone formation
Definition
bone develops from fibrous tissue membranes and only occurs in certain skull bones
Term
Endochondral bone formation
Definition
cartilage is replaced by bone starts in the primary growth center and moves into secondary growth center
Term
Bone marrow
Definition
fills in spaces within bones
Term
Red bone marrow
Definition
hematopoietic tissue and is the most common type in younger animals
Term
Yellow bone marrow
Definition
primarily adipose connective tissue that is most common type in adult animals, can be reverted to red bone marrow if needed
Term
Axial Skeleton
Definition
located along the axis of the body and include the bone of the head and trunk (skull and vertebrae)
Term
What is included in the axial skeleton?
Definition
Cervical, thoracic, lumbar, sacral, coccygeal
Term
Thoracic
Definition
Located dorsal to the thorax and number can vary within species, number is the same as the pair of ribs
Term
Lumbar
Definition
located in the dorsal abdominal region and is large and bulky to support weight
Term
Sacral
Definition
forms sacroiliac joint and fuse to form single solid structure
Term
Coccygeal
Definition
bones of the tail
Term
Xiphoid process
Definition
occurs at the bottom of the sternum near the diaphragm
Term
The pelvic limb consists of
Definition
ilium, ischium, and pubis
Term
Visceral skeleton
Definition
bones formed in soft organs, includes os cordis, os penis, and os rostri
Term
Articular surfaces
Definition
smooth areas of compact bone where bones come in contact with each other (joints)
Term
Articular cartilage
Definition
smooth thin layer od hyaline cartilage that covers articular surfaces of bones
Term
What are the three surfaces of bone?
Definition
Condyle, head, facet
Term
3 classification of joints
Definition
fibrous joints, cartilaginous joints, and synovial joints
Term
Fibrous joints
Definition
immovable joints found in the sutures of the skull and equine splint bones
Term
Cartilaginous Joints
Definition
slightly movable joints that make slight rocking movement found in intervertebral joints, pubic symphysis, mandibular symphysis
Term
Synovial Joints
Definition
freely movable, have ligaments for stabilization (cranial cruciate)
Term
Synovial fluid
Definition
nourishes the articular cartilage
Term
Synovial joint movement
Definition
flexion, extension, adduction, abduction, rotation, circumduction
Term
Types of synovial joints
Definition
Hinge (nodding the head), gliding (carpus an tarsus), pivot (C1-C2 joint shaking head
Term
Muscle tissue
Definition
skeletal, cardiac, smooth
Term
Characteristics of muscle tissue
Definition
excitability, contractibility, extensibility, and elasticity
Term
What are the 3 primary functions of muscle tissue?
Definition
Provide motion, maintain posture, and generate heat
Term
Skeletal Muscle Tissue
Definition
moves bones of the skeleton is made of striated muscle and is controlled by the conscious mind
Term
Epimysium
Definition
well-defined group of cells surrounded by fibrous connective sheath
Term
Origin
Definition
more stable site and does not move much when muscle contracts
Term
Insertion
Definition
site that undergoes the most movement when a muscle contract
Term
Agonist
Definition
primary mover that directly produces desired movement
Term
Antagonist
Definition
directly opposes action of agonist
Term
Synergist
Definition
assists in the action as it contacts at the same time as the agonist
Term
Fixator
Definition
stabilizes joints to allow other movements
Term
Naming Conventions
Definition
by action, by shape, by location, by direction of fibers, by number of head or divisions, by attachment sites
Term
Cutaneous Muscles
Definition
thin, broad superficial muscles that are found in connective tissue just beneath the skin with little to no attachment to bones
Term
Skeleton muscles of respiration
Definition
function to increase and decrease size of thoracic cavity includes the inspiratory muscles diaphragm and external intercostal muscles and expiratory muscles are internal intercostal muscle and abdominal muscles
Term
Characteristics of skeletal muscle cells
Definition
very large and thin, multinucleated
Term
Sarcomere
Definition
series of filaments that make up contractile units of muscle cells, many sarcomeres may up one myofibril
Term
The 2 proteins responsible for contraction
Definition
thick dark myosin and thin light actin
Term
Visible bands of filaments
Definition
A band (dark), H band, I band (light), and Z line
Term
Neuromuscular Junction
Definition
site where ends of motor nerve fibers connect to muscle fibers
Term
Acetylcholine
Definition
synaptic vesicles at the end of nerve fiber that contain neurotransmitter
Term
Motor unit
Definition
one nerve fiber and all the muscle fibers it innervates
Term
Connective tissue layers
Definition
hold components of muscle together (endomysium, fascicle, epimysium)
Term
Epimysium
Definition
contains blood vessels and nerves and is continuous with tendons and aponeuroses
Term
All-or-nothing principle
Definition
when stimulated, individual muscle fibers contact completely or none at all
Term
What are the 3 phases of muscle contraction
Definition
latent phase, contracting phase, relaxation phase
Term
Aerobic
Definition
adequate oxygen supply for energy needs of muscle fiber (max energy extracted from each glucose molecule)
Term
Anaerobic
Definition
need for oxygen exceeds available supply, lactic acid is formed in incomplete glucose breakdown
Term
Cardiac muscle tissue
Definition
is only found in the heart is striated and involuntary
Term
How do cardiac muscle contract
Definition
contractions are rapid and wavelike
Term
Conduction system
Definition
SA node, impulse follows controlled path through the heart, structures in the heart transmit, delay, ad redirect
Term
Sinoatrial node (SA)
Definition
located in wall to the right of atrium
Term
Innervation of cardiac muscles
Definition
not needed to initiate contraction and are innervated from the sympathetic and parasympathetic system
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