Exam 3 lecture 21

Question 1

Circulatory system

Answer 1

-Fluid
-Pumps
-Vessels

Question 2

Fluid

Answer 2

-Intercellular fluid
-Intersitual fluid
-Intersitual fluid
-Plasma

mammalian cells osmotic pressure = 280-300 mOsm/L

Question 3

Open circulatory system

Answer 3

-Blood isn’t separate from interstitial fluid (hemolymph)
-Open ended blood vessels
-Ostia: sinuses surrounding organs close when heart is full of fluid
-Create hydrostatic pressure gradients
-All tissues get same
-Less work

Question 4

Closed circulatory system

Answer 4

-Closed cycle with heart
-Can deliver more O2 to different tissues
-More work

Question 5

Vessel types

Answer 5

-Arteries and arterioles: Carries blood AWAY (smooth muscle)

-Veins and venules: Carries blood TOWARD (smooth muscle)

-Capillaries: Delivers nutrients and waste products (Epithelial)

Question 6

Systemic circulation

Answer 6

-Delivers oxygen to cells/get rid of oxygen

-Arteries to capillary bed to veins

Question 7

Breathing circulation

Answer 7

-Replaces oxygen/getting oxygen
-Lungs

-Veins to capillary bed to arteries

Question 8

Atrium

Answer 8

Receives blood from vessels

Question 9

Ventricle

Answer 9

Sends blood out

Question 10

Valve

Answer 10

Makes sure blood goes in one direction only

Question 11

Double circulation

Answer 11

Right A
Right V
Breathing circuit
Left A
Left V

Question 12

Amphibians

Answer 12

-Pulmocutaneous circuit

-Lung/skin capillaries
-heart chambers not seperate

Question 13

Reptiles

Answer 13

-Pulmonary circuit

-Lung capillaries
-When underwater, has a vessel that delivers less oxygen to systemic capillaries

Question 14

Mammals/birds

Answer 14

-Pulmonary circuits

-4 chambered, 2A/2V

Question 15

Triscupid artioventricular valve

Answer 15

-AV valve
-Between right A and right V

Question 16

Pulmonary semilunar valve

Answer 16

-Between right V and pulmonary artery

Question 17

Mitral (bicuspid) artoventricular valve

Answer 17

-AV valve
-Between left A and left V