Physiology Lec 1

Question 1

of cell types in body?

Answer 1

200

Question 2

of neuron types

Answer 2

3

Question 3

of muscle cell types

Answer 3

3

Question 4

Name the 3 muscle cell types

Answer 4

1. smooth 2. skeletal 3. cardiac

Question 5

The only voluntary muscles?

Answer 5

Skeletal

Question 6

The only voluntary smooth muscle?

Answer 6

Diaphragm

Question 7

Sheet like layer of cells that line external body surfaces, line hollow body tubes and organs, and function as a transport membrane?

Answer 7

Ephithelium

Question 8

Most diverse of the 4 cell types

Answer 8

connective tissue cells

Question 9

Anchors and links structures of the body.

Answer 9

connective tissue cells

Question 10

Organization of th body

Answer 10

cells, tissues, organs, organ systems, organism.

Question 11

What is a determinant for the type of cell?

Answer 11

the type of tissue

Question 12

Name the organ systems

Answer 12

circulatory, digestive, respiratory, urinary, skeletal, muscular, integumentary, immmune, nervous, endocrine, reproductive.

Question 13

Homeostasis definition

Answer 13

maintaining a biological variable; returning it to normal after a pertuberation

Question 14

What is the balance of homeostasis?

Answer 14

equilibrium versus steady-state

Question 15

What are the components of homeostatic contral mechanisms?

Answer 15

afferent -> integration center -> efferent -> change

Question 16

Receptor types

Answer 16

thermo, chemo, baro

Question 17

What does the integrating center do?

Answer 17

evaluates input from receptor and initates the approiate action of the effector

Question 18

Effectors are …

Answer 18

responsible for body responses. include muscles and glands

Question 19

What disrupts homeostasis?

Answer 19

External stimuli (heat, cold, lack of o2, pathogens, toxins), Internal stimuli (body temp, bp, water, salt, sugar concentrations, physical and psychological distress)

Question 20

The higher the gain of the feedback loop (stronger the response), the _____ the system is held near its desired state.

Answer 20

closer

Question 21

Steady state ____ energy

Answer 21

consumes

Question 22

Equilibrium homeostatic state, _____ energy change involved

Answer 22

no

Question 23

Which fluid compartment of the body exchanges fluid with the environment?

Answer 23

blood plasma

Question 24

60-40-20 rule?

Answer 24

60% of the body weight is total body water, 40 is intracellular, 20% is extracellular

Question 25

What % of the body is water weight

Answer 25

60%

Question 26

Whar portion of the body water is intracellular?

Answer 26

2/3rds

Question 27

What portion of body water is extracellular?

Answer 27

1/3rd

Question 28

What % of extracellular fluid is interstitial?

Answer 28

80%

Question 29

What # of excell. fluid is plasma?

Answer 29

20%

Question 30

5L of blood divided by plasma and red cells?

Answer 30

3L plasma, 2L red cells

Question 31

Intracellular fluid + extracellular fluid = ?

Answer 31

total body water

Question 32

Total body water - extracellular fluid =

Answer 32

intercellular fluid

Question 33

plasma + interstitial fluid =

Answer 33

extracellular fluid

Question 34

Which ions are predominant in the intracellular fluid?

Answer 34

K+ and HPO4 2-

Question 35

Which ions are predominate in the extracellular fluid?

Answer 35

Na and Cl-

Question 36

What helps nerves respond to stimuli?

Answer 36

Electrolyte exchange

Question 37

Movement of which two ions are attributed to the electrical charge of nerve cells?

Answer 37

K and Na

Question 38

The ion charge carries across the entire ____ cell

Answer 38

nerve

Question 39

The ICF and ECF have _____ osmotic concentrations

Answer 39

identical