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lecture review 2
exam 2
89
Anatomy
Undergraduate 1
02/18/2019

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Term
Integumentary system functions
Definition
protection prevent water loss, excretion, temperature control, synthesis of Vit D, sensation
Term
Epidermis
Definition
made up of stratified squamous epithelium
Term
Stratum corneum
Definition
the outermost layers, which is dead and provides protection
Term
Stratum basale
Definition
the innermost layer, grows via mitosis and contains melanocytes
Term
Hypodermis (sub-dermis)
Definition
Underlining adipose and lose connective tissue
Term
Dermis
Definition
Irregular, dense connective tissue
Term
Hair
Definition
derived for the epidermis, grows from the hair follicle, serves as insulation,
Term
Arrector pili muscle
Definition
causes goosebumps which increase heat retention
Term
Glands `
Definition
derived from the epidermis
Term
Sebaceous gland functions
Definition
located with the hair follicle, lubricate hair shaft and waterproof skin
Term
Sweat Gland functions
Definition
cool body via evaporation, excretes waste through its duct to the surface
Term
Sensory Receptors
Definition
Derived from structures in dermis
Term
Meisner Corpuscles
Definition
light touch
Term
Pacinnian Corpuscles
Definition
pressuer
Term
Compact bone
Definition
DENSE; location on the bone surface,shaft and head
Term
spongy bone
Definition
lines the marrow cavities in long bone, heads,middle part of short, flat, and irregular, RED MARROW
Term
lONG BONE
Definition
all bones of limbs except the wrist(carpals) and ankles(tarsals)
Term
short bone
Definition
wrist(carpals) and ankles(tarsals)
Term
Flat bones
Definition
skull, sternum, ribs
Term
Irregular bones
Definition
vertebrae, pelvis,facial
Term
diaphysis
Definition
shaft
Term
Epiphysis
Definition
head, ends of long bones,contains the epiphyseal line of plate
Term
Medullary Cavity
Definition
holds Yellow Marrow
Term
Intramembranous Ossification
Definition
includes bones of the skull and clavicle. fibrous connective tissue present 2 months after conception, not complete at birth, FONTANELS remain 1.5yrs
Term
Intercartilaginous
Definition
all skeleton below base of skull(not clavicle)uses hyaline cartilage as blue print
Term
Center of primary Ossification
Definition
in long bones;(b4 birth) starting point of ossification
Term
Center of secondary ossification
Definition
developes later (after birth)converts hyaline cartilage into bone
Term
Ossifications Direction
Definition
primary: spreads towards the end of the bone
Secondary: spreads towards the shaft
Term
Epiphyseal Plate
Definition
allows growth in length, up to 18 yrs females and 12yrs in males
Term
Epiphyseal Line
Definition
closure the bone can not grow any longer but still can grow in diameter
Term
Foramen
Definition
holes in a bone for nerves and blood vessels
Term
Fossa
Definition
Shallow depression in bone
Term
Meatus
Definition
bony conal
Term
Condyle
Definition
rounded articiular projection
Term
Process
Definition
bony attachment for muscle attachment
Term
Tubercle
Definition
a small rounded projection or process
Term
Who has more bones and Adult of Child?
Definition
Children have 260, while Adults have 206
Term
Synarthroses
Definition
immovable example: crainal sutures
Term
Amphiarthroses
Definition
slightly movable example: pubic symphysis
Term
Diarthroses
Definition
Freely movable example: elbow, hip, knee
Term
Capsule
Definition
2 layered enclosure of joint
Term
Synovial Membrane
Definition
inner layer of capsule, secertes synovial fluid
Term
Articular Cartilage
Definition
Glossy, smooth hyaline cratilage
Term
Joint Cavity
Definition
Enclosed space with synovial fluid
Term
ligaments
Definition
function to reinforce and stabilize the joints
Term
Flexion
Definition
bending movement
Term
Extension
Definition
straighting movment
Term
Abduction
Definition
movement away from midline
Term
Adduction
Definition
movement towards midline
Term
Circumduction
Definition
move in a circular motion
Term
Rotation
Definition
rotation around the long axis of a bone
Term
Supination
Definition
Turing palm forward; forearm only
Term
pronation
Definition
Turning palm backwards; forearm only
Term
inversion
Definition
turning sole of foot medially
Term
eversion
Definition
turning sole of foot lateraly
Term
Hinge Joint
Definition
knees, elbows, and between the phalanges
Term
Ball and socket Joint
Definition
shoulders and hips
Term
gliding joint
Definition
carpals of wrist, and tarsals of ankle
Term
Condyliod Joints
Definition
joints between carpals and metacarpals as well as metacarpolphalangeal joints
Term
The 3 types of muscle
Definition
Skeletal, smooth and Cardiac
Term
Purpose of Skeletal muscle
Definition
movement, maintain posture, support soft tissue, maintain body temp
Term
Propertise of muscle tissue
Definition
excitable-nerves
constractility- shorten in lenth
elasticity- can stretched but return to resting length
Term
Muscle
Definition
an organ covered with epimysium
Term
Fascicles
Definition
groups of muscle fibers wrapped by perimysium
Term
muscle Fiber
Definition
is covered by connective tissue called endomysium
Term
Sarcolemma
Definition
cell membrane of muscle fiber
Term
sarcoplasm
Definition
cytoplasm with oranelles of muscle fibers
Term
Myofibroils
Definition
contractile rods that fill the muscle fibers
Term
sarcomers
Definition
structural and functional units of muscle cell
Term
Myofilament
Definition
composed each sarcomer protien fillaments slide together to produce contraction thge entire muscle
Term
striations
Definition
patterns of actin(thin) and myosin protien filament within each sarcomere
Term
M line
Definition
thick myosin, has a head that pinots using ATP energy
Term
Z line
Definition
thin(actin)marks the boundaries between sarcomeres
Term
I Bands
Definition
contains only actin,(thin myofibrils) light bands
Term
A bands
Definition
contains only myosin,(thick myofibrils) dark bands
Term
sarcolema
Definition
seperates the muscle cell from its surrondings becomes positively charged outside and negatively charged inside
Term
membrane potential
Definition
Stored energy
Term
depolarization
Definition
a reversal of charge on the membrane, is the first step towards muscle contrution
Term
sarcomere
Definition
makes up the long myofibrils with in the muscle fiber, surrounded by sarcoplasmic reticulum
Term
sarcoplasmic reticulum stores ---- that releases between actin and my opinion myofilaments to begin contraction
Definition
Ca++
Term
tropmyosin
Definition
blocking filament
Term
Tripolin
Definition
hold tropmyosin in place
Term
motor unit
Definition
nerve fiber and all the muscle fibers it stimulates
Term
neurotransmitter
Definition
located where nerves motor end plate contact the muscle fiber
Term
resting potential
Definition
-70Mv, more Na+ outside cell then inside the fiber, more K+ inside than out
Term
sodium-potassium
Definition
use ATP to move Na+ out and K+ in to repolarize the cell
Term
sustained energy
Definition
Kerns cycle and electron transport system with in mitochondria provides.if there is sufficient oxygen
Term
lactic Acid
Definition
forms when oxygen not sufficient, pyruvate converts to this causing muscle fatigue and burning
Term
tonic
Definition
tone tension, partially contracted muscle different groups contractingredients at different times
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