ch. 1 2 3 4 Flashcards Preview

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Flashcards in ch. 1 2 3 4 Deck (134)
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1

structures

anatomy

2

functions

physiology

3

what is the relationship between anatomy and physiology

they are difficult to separate; form follows function

4

list in order from least to most complex

chemical
cellular
tissue
organ
organ systems
organisms

5

ex of chemical level

atoms->molecules

6

ex of cellular level

skin cell

7

ex of tissue level

connective tissue

8

ex of organ level

stomach

9

ex of organ system level

digestive system

10

ex of organism level

human

11

basic unit of life

cells

12

existence of a stable internal environment

homeostasis

13

adjustment of physiological systems to preserve homeostasis

homeostatic regulation

14

what will happen if homeostasis is not preserved

illness and/or death

15

receives signals about changes in internal environment- causes responses that reverse these changes back to normal range

negative feedback

16

what does negative feedback do

tends to minimize change

17

what is an ex of negative feedback

thermoregulation/body temp (thermostat)

18

an initial stimulus produces a response that enhances or exaggerates the change

positive feedback

19

produces extreme responses and relatively rare in the body

positive feedback

20

what is an ex of positive feedback

labor and delivery

21

study of tissues

histology

22

cells and cell products organized into layers or groups that perform a relatively limited number of functions

tissues

23

4 basic types of tissue

epithelial
connective
muscle
nerve/neural

24

cover internal and external surfaces; forms glands

epithelial

25

fill internal spaces and provide support for other tissues

connective

26

provide movement via contractions

muscle

27

conduct electrical impulses

neural/nerve

28

cellularity, attachment, avascular, regeneration

4 characteristics of epith

29

composed of almost entirely of cells bound closely together

cellularity

30

base of epith is bound to a thin basement membrane

attachment