Exam 1

Question 1

Homeostasis

Answer 1

Maintenance of a normal environment within the body that allows for proper function.

Question 2

Physiology

Answer 2

The study of the normal functions of the body

Question 3

Pathophysiology

Answer 3

The study of the loss of normal functions of the body.

Question 4

An example of a homeostatic mechanism is?

Answer 4

Shivering

Question 5

What do receptors do?

Answer 5

Detect level of things and tells the regulator levels of things.

Question 6

What do regulator do?

Answer 6

•Sets and maintains the set point
•Tells Effectors what to do

Question 7

Set point is?

Answer 7

Normal level

Question 8

What do Effectors do?

Answer 8

•Put out the Appropriate output (ex. Shivering, sweat production)

Question 9

Negative feedback

Answer 9

•A reciprocal response to a deviation from a normal level

Question 10

What does Negative feedback do?

Answer 10

•Lowers Normal value (levels) if too high
•Raises Normal value (levels) if to too low
•Maintains Homeostasis

Question 11

Positive feedback

Answer 11

Increase normal range to carry out a special event.

Question 12

What is an example of a special event?

Answer 12

•Hormone
•Childbirth
•Blood coagulation
•Breast feeding

Question 13

Does positive feedback contribute to Homeostasis?

Answer 13

No but it is still a necessary feedback

Question 14

What happens when positive feedback is over?

Answer 14

Negative feedback takes back over

Question 15

Metabolism is?

Answer 15

Chemical Reactions happening in the body

Question 16

What is Anabolism?

Answer 16

Build up of molecules

Question 17

What is catabolism?

Answer 17

Break down of molecules

Question 18

Inorganic molecules are?

Answer 18

Small simple molecules

Question 19

Water is located in which two compartments?

Answer 19

•Intracellular compartment
•Extracellular compartment

Question 20

What is Intracellular compartment?

Answer 20

Compartment inside the cells

Question 21

Intracellular compartment example?

Answer 21

Cytosol

Question 22

What is Extracellular compartment?

Answer 22

Compartment located outside of the cell

Question 23

Interstitial compartment is?

Answer 23

•Between the cells

Question 24

Extracellular compartment contains?

Answer 24

•Interstitial: Interstitial fluid
•Blood vessels: plasma
•Lymph vessels: lymph
•Transcellular: transcellular fluids

Question 25

Transcellular fluids is in?

Answer 25

•Urine •Fluid In eyes

Question 26

How much water does Intracellular compartment contain?

Answer 26

2/3 of water volume

Question 27

How much water does Extracellular compartment contain?

Answer 27

1/3 of water volume

Question 28

A mixing media is?

Answer 28

•Solution •Colloid •Suspension

Question 29

Every fluid in the body is a?

Answer 29

•Solution •Colloid •Suspension

Question 30

A solution is?

Answer 30

•Mixture of very small particulars and water •Example’s are ions mixed in plasma

Question 31

A Colloid is?

Answer 31

•Mixture of medium particles and water •Example’s are proteins mixed in plasma

Question 32

A Suspension is?

Answer 32

• Mixture of large particles and water • Examples are red blood cells mixed in the plasma

Question 33

Ions (cations and anions) / Electrons are?

Answer 33

In equilibrium with salts

Question 34

Main functions of Ions/ Electrolytes are?

Answer 34

•Communication (e.g action potentials) •General Homeostasis •Transported across membranes •Fluid, electrolyte and pH balance

Question 35

Acids

Answer 35

Substance that releases H+

Question 36

Base

Answer 36

Substance that combined with H+