Anatomy Chapter 1 Flashcards
Anatomy
Stufy fo structure, gross macroscopic, microscopic, and developmental
Physiology
The study of function, why is it happening
Principle of complementarity
function always reflects the structure and what a structure can do depends on its specific form
anatomy and physiology are inseperable
levels of structural organization
bottom-
chemical, cellular, tissue, organ, organ system, organism- top, they build on top of each other
chemical structural level
atoms and molecules
cellular structural level
cells and their organelles
tissue structural level
collection of similar cells, epithelia, connective, nervous, muscle
organ structural level
contains two or more types of tissues, skin, heart, kidney
organ system structural level
organs that work closely together, 11 systems
organism structural level
human, all organ systems
Integumentary system
forms external body coverage, creates a boundary from external environment, protects deeper tissues from injury, synthesizes vitamin D, cant absorb calcium if there is not enough vitamin D, houses receptors, sweat and oil glands, regulates temp
Skeletal System
protects and supports body organs, provides framework for muscles to attach to, all blood cells are formed within bones, stores minerals such as calcium, does not provide movement
muscular system
allows for manipulation of the environment, locomotion, facial expression, maintains posture, produces heat
nervous system
fast acting control system, responsible for responsiveness, responds to internal/external changes by activating appropriate glands/muscles, electrical impuleses
endocrine system
consists of hormone secreting glands, slow acting control system of the body, regulates processes such as growth, reproduction, and nutrients
cardiovascular system
heart, blood vessels, heart pumps in to the blood vessels transports it to the organs and tissues and back to the heart, carries 02, co2, and nutrients/wastes, blood cells are found
lymphatic/immune system
picks up leaked fluid deom blood vessels/returns it to blood, disposes of debris in lymphatic system/houses white blood cells, protects from invaders/mounts the attack from foreign substances
respiratory system
keeps blood constantly supplied with o2 and removes co2, gas exchange occur through the walls of the air sacs of the lungs
digestive system
moves food through the GI tract, breaks down food into absorbable units that enter the blood for distribution to the body cells, undigested foodstuffs are eliminated as feces
urinary system
eliminates nitrogenous wastes, helps regulate the water, electrolytes and acid base balance
reproductive system
production of offspring, male/female sex hormones, overies/testes, mammary glands
8 necessary life functions
something your body has to do in order to live/survive
boundaries, movement, responsiveness, digestion, metabolism, excretion, reproduction,growth
maintaining boundaries
between internal/external environments, achieved by plasma membranes, heat/dehydration, cold, toxins, pathogens
movement
contractility, body parts (skeletal), blood flow (cardiac muscle), food(smooth muscles)
responsiveness
irritability, nervouse system control center, sense and respond to internal/external stimuli
digestion
breakdown of ingested food, absorption of simple molecules into the blood
metabolism
sum of all chemical reactions that occur in body cells, can distinguish between catabolism and anabolism
excretion
removal of wastes from metabolism/digestion, remove co2, urea, feces
reproduction
cellular division for growth/repair, production of offspring, works with growth
growth
increase in size of a body part, increase of an organism. works with reproduction
5 survival needs
must be met at all times or the body will suffer/die. something your body needs to have from the outside.
nutrients, oxygen, water, normal body temp, appropriate atmospheric pressure
nutrient/survival need
substances in food that promote normal growth, maintainence, and repair. major/minor nutrients
oxygen/survival need
sufficient oxygen supply at any time is essential for all cells, tissues, and organs, mitochondria needs oxygen to create ATP, respiratory and cardiovascular systems cooperate to supply all body cells with oxygen
regulation of body temp/survival need
98.6F, reflects the balance between heat production and heat loss, optimal enzyme activity occurs at this temp, increased temp denatures proteins/depresses neurons