info on heart and circulation unit

Question 1

Anterior means

Answer 1

toward the ventral side of humans

Question 2

Superior means

Answer 2

Above

Question 3

Distal means

Answer 3

Farther away from the point of attachment or origin

Question 4

Inferior means

Answer 4

Below

Question 5

Is blood pressure in veins

lower or higher

Answer 5

Lower

Question 6

Veins are larger in diameter than_________

Answer 6

Arteries

Question 7

All tunics are present in __________

Answer 7

Veins

Question 8

__________have no tunica media or tunica externa

Answer 8

Capillaries

Question 9

blood flows through __________ relatively slow

Answer 9

Capillaries

Question 10

Vessel with the slowest velocity of blood flow

Answer 10

Capillaries

Question 11

Set of vessels with the lowest blood pressure

Answer 11

Veins

Question 12

innermost layer of blood vessel

Answer 12

Tunica Interna

Question 13

Middle layer of smooth muscle cells arranged circularly around the blood vessel

Answer 13

Tunica Media

Question 14

Blood flowing through a blood vessel can be regulated by contraction or relaxation of the smooth muscle in the _____________

Answer 14

Tunica Media

Question 15

The outer layer of the blood vessel, composed of connective tissue

Answer 15

Tunica Adventitia

Question 16

________contain about 65-70% of the blood volume

Answer 16

Veins

Question 17

Thickest blood vessel layer is ____________

Answer 17

Tunica Media

Question 18

Pressure:
(HIGH) -  Aorta
              Arteries
              Arterioles
              Capillaries
              Venules
              Veins
(LOW)     Vena Cave

Answer 18

Pressure from highest to lowest

Question 19

Widening of blood vessels

Answer 19

Vasodilation

Question 20

Narrowing of blood vessels

Answer 20

Vasoconstriction

Question 21

Vasodilation results from relaxation of _______________ cells within the vessel walls

Answer 21

Smooth Muscle

Question 22

Primary function of vasodilation is to ________ blood flow to tissues that need it most.

Answer 22

Increase

Question 23

Vasodilation increases the initial ______ of the blood vessels

Answer 23

Diameter

Question 24

Facts about veins:

Answer 24

1. Carry deoxygenated blood
2. Walls are thin
3. Their lunen are larger than arteries
4. Elasticity less than arteries
5. Bluish in color
6. Blood flows in veins with low pressure
7. Unidirectional flow of blood not as strong as arteries
8. Veins have valves

Question 25

The walls of __________capillaries have no gaps between the endothelial cells

Answer 25

Continuous

Question 26

Specialized to conduct action pontentials

Answer 26

Purkinje Fibers

Question 27

Heart Wall-Divided Into 3 Layers

Answer 27

1. Epicardium (outer) 2. Myocardium (middle) 3. Endocardium (inner)

Question 28

Major Artery

Answer 28

Aorta

Question 29

Major Vein

Answer 29

Vena Cava

Question 30

________helps regulate bodies osmotic pressure

Answer 30

Plasma

Question 31

Approximate blood volume of an adult

Answer 31

5 Liters

Question 32

Which WBCs turn into macrophages

Answer 32

Monocytes

Question 33

What is a voracious phagocyte

Answer 33

Neutrophil

Question 34

3 Steps of Hemostasis

Answer 34

1. Vascular Spasm 2. Platelet Plug Formation 3. Coagulation

Question 35

Absence of clotting factor VII

Answer 35

Hemophilia A

Question 36

Are all Leukocytes nucleated

Answer 36

Yes

Question 37

Most numerous Leukocyte

Answer 37

Neutrophils

Question 38

Leukocytes that contain histamines in its granules

Answer 38

Basophils

Question 39

Is blood slightly alkaline

Answer 39

Yes

Question 40

________________is determined by glycoproteins present on the surface of erythrocytes

Answer 40

Blood Type

Question 41

_______________not found in Serum

Answer 41

Clotting Factors

Question 42

Primary function of hemoglobin

Answer 42

To Carry Oxygen