The Human Body: An Orientation
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the study of the structure and shape of the body and its part and their relationships to one another

ANATOMY

the study of how the body and its parts work or function

PHYSIOLOGY

tiny building blocks of matter

ATOMS

combination of atoms

<p>MOLECULES</p> Signup and view all the answers

the smallest units of all living things; made up of molecules

<p>CELLS</p> Signup and view all the answers

consist of groups of similar cells that have a common function

<p>TISSUES</p> Signup and view all the answers

a structure composed of two or more tissue types that performs a specific function for the body

<p>ORGAN</p> Signup and view all the answers

consists of 11 organ systems that make up the living human being

<p>ORGANISM</p> Signup and view all the answers

synthesizes vitamin D; location of sensory receptors, and sweat and oil glands

<p>INTEGUMENTARY SYSTEM</p> Signup and view all the answers

protects and supports body organs; provides a framework for the muscles to use in movement; blood cells are formed within bones

<p>SKELETAL SYSTEM</p> Signup and view all the answers

maintain posture; manipulation of the environment, locomotion, and facial expression

<p>MUSCULAR SYSTEM</p> Signup and view all the answers

fast-acting control system of the body; responds to internal and external changes by activating appropriate muscles and glands

<p>NERVOUS SYSTEM</p> Signup and view all the answers

glands secrete hormones that regulate processes; slow-acting system of the body

<p>ENDOCRINE SYSTEM</p> Signup and view all the answers

delivers oxygen, nutrients, hormones, and other substances to, and picks up wastes such as carbon dioxide from, cells near sites of exchange

<p>CARDIOVASCULAR SYSTEM</p> Signup and view all the answers

returns leaked blood fluid from tissues to the bloodstream so that there is enough blood to continuously circulate through the body

<p>LYMPHATIC SYSTEM</p> Signup and view all the answers

keeps the body with supply of oxygen and removes carbon dioxide

<p>RESPIRATORY SYSTEM</p> Signup and view all the answers

absorbs nutrients and reabsorb water

<p>DIGESTIVE SYSTEM</p> Signup and view all the answers

removes the nitrogen-containing wastes from the blood and flushes them from the body

<p>URINARY SYSTEM</p> Signup and view all the answers

functions to produce offspring

<p>REPRODUCTIVE SYSTEM</p> Signup and view all the answers

a life function that is the ability of an organism to maintain its "inside" distinct from its "outside"

<p>MAINTAINING BOUNDARIES</p> Signup and view all the answers

a life function that includes all the activities promoted by the muscular system, such as propelling ourselves from one place to another

<p>MOVEMENT</p> Signup and view all the answers

a life function that is the ability to sense changes (stimuli) in the environment and then react to them

<p>RESPONSIVENESS OR IRRITABILITY</p> Signup and view all the answers

a life function that is the process of breaking down ingested food into simple molecules that can then be absorbed into the blood

<p>DIGESTION</p> Signup and view all the answers

a life function that is a broad term that refers to all chemical reactions that occur within the body and all of its cells

<p>METABOLISM</p> Signup and view all the answers

a life function that is the process of removing wastes from the body

<p>EXCRETION</p> Signup and view all the answers

a life function that occurs on the cellular or organismal level which results in the production of offspring

<p>REPRODUCTION</p> Signup and view all the answers

a life function that involves an increase in cell size or an increase in body size that is usually accomplished by an increase in the number of cells

<p>GROWTH</p> Signup and view all the answers

a survival need which refers to the chemical substance used by the body for normal growth, maintenance, and repair

<p>NUTRIENTS</p> Signup and view all the answers

a survival need that is required for chemical reactions in food to release energy and human cells can survive for only a few minutes without it

<p>OXYGEN</p> Signup and view all the answers

a survival need that is the single most abundant chemical substance in the body and provides the fluid base for body secretions and excretions

<p>WATER</p> Signup and view all the answers

a survival need that is required to be maintained for chemical reactions to continue at life-sustaining level

<p>NORMAL BODY TEMPERATURE</p> Signup and view all the answers

a survival need that is defined as the force exerted on the surface of the body by the weight of air

<p>ATMOSPHERIC PRESSURE</p> Signup and view all the answers

defined as an erect body with arms at the side, thumbs pointed laterally, and feet parallel and flat on the floor, and palms are facing anteriorly (toward the front)

<p>ANATOMICAL POSITION</p> Signup and view all the answers

the forehead to the nose; toward the head end or upper part of a structure or the body; above; cranial or cephalic

<p>SUPERIOR</p> Signup and view all the answers

the navel is to the breastbone; away from the head end or toward the lower part of a structure or body; below; CAUDAL

<p>INFERIOR</p> Signup and view all the answers

the breastbone is to the spine; toward or at the front of the body; in front of; VENTRAL

<p>ANTERIOR</p> Signup and view all the answers

the heart is to the breastbone; toward or at the backside of the body; behind; DORSAL

<p>POSTERIOR</p> Signup and view all the answers

the heart is to the chest; toward or at the midline of the body; on the inner side of;

<p>MEDIAL</p> Signup and view all the answers

the arms are to the chest; away from the midline of the bod; on the outer side of

<p>LATERAL</p> Signup and view all the answers

the elbow is to the wrist; close to the origin of the body part or the point of attachment of a limb to the body trunk

<p>PROXIMAL</p> Signup and view all the answers

the knee is to the thigh; farther from the origin of a body part or the point of attachment of a limb to the body trunk

<p>DISTAL</p> Signup and view all the answers

the skin is to the skeleton; toward or at the body surface; external

<p>SUPERFICIAL</p> Signup and view all the answers

the lungs are to the rib cage; away from the body surface; more internal

<p>DEEP</p> Signup and view all the answers

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