Unit 2: Blood Vessels

Question 1

Tunica intima

Answer 1

Inner most layer and is layer exposed to the blood

Question 2

Tunica media

Answer 2

Middle layer and is typically the thickest of the three

Question 3

Tunica adventitia

Answer 3

Outermost layer and is made if loose connective tissue

Question 4

Arteries

Answer 4

Blood vessels that take oxygenated blood away from the heart and deliver it to the rest of the body

Question 5

Conducting arteries

Answer 5

Largest in diameter and have the thickest walls

Maintains blood pressure and flow

Question 6

Distributing muscular arteries

Answer 6

Smaller and medium sized arteries that control the blood flow to many body regions

Question 7

Vasoconstriction

Answer 7

Increases resistance and reduces flow

Question 8

Vasodilation

Answer 8

Decreases resistance and increases flow

Question 9

Arterioles

Answer 9

Transport blood from small arteries to capillaries

Question 10

Which will occur if the BP decreases?

Answer 10

Increase heart rate
Increased stroke volume
Vasoconstriction

Question 11

Blood pressure

Answer 11

Force of blood pushing against the walls of blood vessels

Question 12

Blood pressure varies according to the….

Answer 12

Cardiac cycle

Question 13

The maximum pressure when ventricles contract

Answer 13

Systolic pressure

Question 14

The pressure when ventricles relax

Answer 14

Diastolic pressure

Question 15

The alternation between systolic and diastolic pressure results in a…

Answer 15

Pulse

Question 16

Five factors that affect blood pressure

Answer 16

Cardiac output, blood volume, peripheral resistance, blood viscosity and chemicals

Question 17

Cardiac output

Answer 17

Amount of blood pumped from the left ventricle per minute

Question 18

Calculation for cardiac output

Answer 18

Stroke volume x heart rate

Question 19

Volume of blood pumped from a ventricle with each heart beat

Answer 19

Stroke volume

Question 20

Friction between the blood and the walls of blood vessels

Answer 20

Peripheral resistance

Question 21

Fluidity or thickness of blood

Answer 21

Viscosity

Question 22

High viscosity of blood does what?

Answer 22

Increases peripheral resistance snd blood pressure

Question 23

Vasoconstriction and blood pressure increases with what drug use?

Answer 23

Nicotine

Question 24

Vasodilation and blood pressure decrease with what substance?

Answer 24

Alcohol