Human Physiology Ch 1

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1

physiology

structure-function relation of body systems

2

scientific observations

observe

hypothesis

design/conduct experiment

analyze data

replicate results

becomes theory

3

homeostasis

maintain equilibrium amongst systems within a certain range

4

"purpose" of physiologic processes taking place

homeostasis

5

sensor

detects deviations in conditions away from set point

6

integrating center

controls the activity of the effectors based on input from sensors

7

effector

makes appropriate changes to counter changes to homeostasis

8

feedback

– Control center sends signals to effectors, making fine adjustments to stay in home

9

Nega8ve Feedback Loop

change in a condition leads to a response which counteracts that change

10

positive feedback loop

amplifies that change

11

antagonistic effectors

maintains variables within a certain range

dynamic constancy

12

intrinsic regulation

cells within organ sense and change and signal other cells to act

13

extrinsically

regulated by endocrine system

14

systems regulating homeostasis

nervous system

endocrine

15

adaptation

Characterisic that favors survival in a specific environment

inherited change

16

acclimitization

reversible improved function of an already existing system

17

organism hierarchy

cell

tissue

organ

organ system

organism

18

4 major types of tissue

muscle

epithelial

nervous

connective

19

3 types of muscle tissue

striated

smooth

cardiac

20

nerve tissue

communication system

21

types of nerve tissue

neurons

neuroglial

22

neurons

high speed communication via electrical signals

23

neuroglial

support neurons

24

connective tissue

connection

function

support

transportation

25

specialized connective tissue

adipose

cartilage

blood

bone

26

organs

two or more types of primary tissue that function together to perform particular functions

27

organ systems

group of organs working together to perform specific functions 11 types

28

11 organ systems in humans

Circulatory System •Diges9ve System •Respiratory System •

Urinary System •Skeletal System •Muscular System •Integumentary System •Immune System •Nervous System •Endocrine System •Reproduc9ve System