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Anatomy Chapter 1
Exam 3
57
Medical
Not Applicable
05/06/2008

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Term
Anatomy
Definition
the branch of science that deals with the structure (morphology) of body parts-their forms and how they are organized
Term
Physiology
Definition
concerns the funcitons of body parts (what they do and how they do it)
Term
Chemicals consist of..
Definition
microscopic particles called atoms, which join to form molecules. Small molecules can combine in complex ways to form larger macromolecules
Term
Metabolism
Definition
The sum total of chemical reactions in the body that break substances down and build them up. The reactions of metabolism enable us to acquire and use energy to fuel processes
Term
Requirements of Organisms
Definition
Water, Foods, Oxygen, Heat, Pressure (atmospheric and hydrostatic)
Term
Homeostasis
Definition
stable internal environment
Term
Three components of homeostatic mechanisms
Definition
Receptors: provide info about specific conditions (stimuli) in the internal environment
Set point: what a particular value should be
Effectors: cause responses that alter conditions in the internal environment
Term
Anterior
Definition
pertaining to the front
Term
Deep
Definition
farther away from the body's surface
Term
Distal
Definition
further from a point of attachment; opposite of proximal
Term
Inferior
Definition
situated below something else; pertaining to the lower surface of a part
Term
Lateral
Definition
pertaining to the side
Term
Medial
Definition
toward or near the midline
Term
Posterior
Definition
toward the back; the opposite of anterior
Term
Proximal
Definition
closer to the point of attachment; opposite of distal
Term
Superficial
Definition
near the body surface
Term
Superior
Definition
structure higher than another structure
Term
Atrophy
Definition
wasting away of tissue; decrease in size of a part; sometimes referred to as a disuse atrophy
Term
Cavities
Definition
hollow place
Term
Directional Terms
Definition
describe relative positions of body parts
Term
Effector
Definition
a muscle or gland that effects change in the body
Term
Feedback
Definition
a highly complex and integrated communication control network, classified as negative and positive
Term
Mediastinum
Definition
tissues and organs of the thoracic cavity that form a septum between the lungs
Term
Metabolism
Definition
refers to all the physical and chemical changes that occur within body
Term
Negative feedback
Definition
a mechanism of response in which a stimulus initiates an action to return a system to its reference or set point (example: blood pressure regulation, body temp, blood sugar regulation, water and electrolyte distribution, acid base balance)
Term
Planes of section
Definition
to study the individual organs or the body as a whole, it is often subdivided into smaller segments
Term
Sagital
Definition
a plane or section that divides a structure into right and left portions (longitudinal)
Term
Frontal
Definition
a plane or section that divides a structure into anterior and posterior portions (latitudinal)
Term
Transverse
Definition
a plane that divides a structure into superior and inferior portions
Term
Positive feedback
Definition
a mechanism in which initiating a stimulus causes more of the same action, that is: moving further away from the set point. Instead of opposing a change to return it to normal, positive feedback reinforces the change until some other force stops the process as seen in the breathing process (example: irreversible shock, nerve action potential involving sodium influx, parturition-secretion of estrogen and progesterone and the birthing process)
Term
Prone
Definition
used to describe the body lying in a horizontal position facing downward
Term
Supine
Definition
used to describe the body lying in a horizontal position facing upward
Term
Vital Signs
Definition
among the more comon observations made by physicians and nurses working with patients. Assessment of vital signs includes measuring body temperature and blood pressure and monitoring rates and types of pulse and breathing movements. There is a close relationship between these signs and the characteristics of life, since vital signs are the results of metabolic activities.
Term
Levels of Organization
Definition
cells...tissues(group of like cells and their intercellular substances functioning together to perform a specialized activity)...organs(structures composed of different tissues working together to perform a particular function)...organ system(group of organs working together to perform a particular function)...organism(a group of organ systems which function together as a unit)
Term
Major Organ Systems
Definition
Integumentary
Skeletal
Muscular
Nervous
Endocrine
Cardiovascular
Lymphatic
Respiratory
Digestive
Urinary
Reproductive
Term
Abdominopelvic Cavity
Definition
the space between the diaphragm and the lower portion of the trunk of the body. contains the abdominal and pelvic organs (DIVIDED INTO NINE REGIONS)
Term
Integumentary System
Definition
skin, hair, nails, sense receptors, sweat glands, sebaceous glands
Term
Skeletal System
Definition
support and movement-bones and joints (ligaments and cartilages)
Term
Muscular System
Definition
support and movement-muscles
Term
Nervous System
Definition
Integration and Coordination-brain, spinal cord, nerves, sense organs
Term
Endocrine System
Definition
Integration and Coordination-all of the glands that secrete chemical messengers called hormones
pituitary gland
pineal gland
hypothalamus
thyroid gland
parathyroid
thymus
adrenal glands
pancreas
ovaries
testes
Term
Cardiovascular System
Definition
Transport-heart, arteries, veins, capillaries, blood
Term
Lymphatic System
Definition
Transport-lymph nodes, lymphatic vessels, lymph fluid, thymus gland, spleen
Term
Respiratory System
Definition
Absorption and Excretion-nose, pharynx, larynx, trachea, bronchi, lungs
Term
Digestive System
Definition
Absorption and Excretion-
Primary-mouth, pharynx, esophagus, stomach, small and large intestine, rectum, anal canal
Accessory-teeth, tongue, salivary glands, liver, gallbladder, pancreas, appendix
Term
Urinary System
Definition
Absorption and Excretion-kidneys, ureters, urinary bladder, urethra
Term
Reproductive System (MALE)
Definition
Gonads-testes
Genital Ducts-vas deferens, urethra
Accessory Organs-prostate gland
Genitalia-scrotum, penis
Term
Reproductive System (FEMALE)
Definition
gonads-ovaries
accessory organs-uterus, uterine (fallopian) tubes, vagina
genitalia-vulva
mammory glands
Term
Body Regions
Definition
Axial region- head, neck, torso or trunk
Term
Major Body Cavities and Organs
Definition
Two major body cavities-dorsal and ventral
Term
Dorsal Cavity
Definition
cranial cavity-houses brain
spinal cavity (vertebral canal)-houses the spinal cord
Term
Ventral Cavity
Definition
contents usually collectively call viscera

Thoracic Cavity-

pleural cavity surrounds lungs
mediastinum is the broad middle portion between the lungs that extends from the sternum to the vertebrae;includes heart, thymus gland, esophagus, and trachea

pericardial cavity contains the heart
Term
Serous Membrane (two layers)
Definition
-two distinct layers of tissue:
-epithelial sheet is a thin layer of simple squamous epithelium
-connective tissue layer forms a very thin, gluelike basement membrane that holds and supports the epithelial cells
Term
Visceral pleura
Definition
serous membrane that covers the surface of the lung
Term
Parietal pleura
Definition
the membrane lining the wall of the pleural cavity
Term
Pericardial Cavity
Definition
-lined by a double layer of serous membrane
-parietal pericardium lined the wall of the pericardial cavity
-visceral pericardium (also called the epicardium) adheres to the heart
Term
Pericaridal Cavity-abdominal
Definition
-The abdominal cavity is lined by serous membranes called the:
-parietal peritoneum: lines the walls of abdominal cavity
-visceral peritoneum: covers the abdominopelvic organs and constitues their serosa layer
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