211 Test One

Question 1

Homeostasis

Answer 1

Maintaining balance despite widely changing external conditions.

Question 2

Intrinsic regulation

Answer 2

Autoregulation, happens at tissue and organ level.

Question 3

Extrinsic regulation

Answer 3

Neural and hormonal. External

Question 4

Homeostatic feedback loop step one.

Answer 4

Stimulus: physical or chemical parameter that can very. Stimuli can be internal or external.

Question 5

Homeostatic feedback loop step two.

Answer 5

Sensor: the structure that detects the change. Sensor can be cells, tissues organ that has sensors for the stimulus.

Question 6

Homeostatic feedback loop step three.

Answer 6

Control center: the structure that processes the information. Then sends a message. Message is either neural or endocrine(chemical).

Question 7

Homeostatic feedback loop step four.

Answer 7

Message: intercellular communication. Will be neural, chemical or hormonal.

Question 8

Homeostatic feedback loop step five.

Answer 8

Effector: cell, tissue, organ or structure that receives the message. The effector will either receive a neural signal or have receptor for the hormone or chemical (ligand).

Question 9

Homeostatic feedback loop step six.

Answer 9

Response: change of the effector. The presence of the message will change the activity of the receptor and then will counteract the change.

Question 10

Biochemistry

Answer 10

Macromolecules
Pro tines, lipids, carbohydrates and nucleic acids
Condensation/dehydration reactions.

Question 11

Enzymes

Answer 11

Chemical reaction catalyst, does not get used up in the reaction. Attaches to a substrate.

Question 12

Properties of water.

Answer 12

H bonding, …

Question 13

Membrane structure and function

Answer 13

Very important!!!!!!!!
Passive transport:Diffusion and Facilitated diffusion
Active transport.

Question 14

Histology, four tissue types.

Answer 14

Epithelial
Connective
Muscle
Nervous

Question 15

Autonomic nervous system

Answer 15

Very important!

Question 16

Endocrine cells

Answer 16

How do they work!

Question 17

Ligand

Answer 17

?

Question 18

Blood

Answer 18

Liquid Connective tissue

Question 19

Blood function

Answer 19

Transport…
Protection…
Regulation…

Question 20

Hemostasis

Answer 20

?

Question 21

Blood properties

Answer 21

4-6 L in you body
Temp. 38C
5x more viscous the water. 
pH = 7.35-7.45 acidosis, alkalosis!
Osmolarity: 300 mOsm/L

Question 22

Plasma

Answer 22

Liquid part of blood.

Question 23

Anastomoses

Answer 23

Redundancy

Question 24

Main function of cardiovascular system

Answer 24

Targeted perfusion of tissues to meet demand

Question 25

Flow =change in pressure / resistance

Answer 25

…

Question 26

Pulse pressure

Answer 26

sP-DP

120/70=50