13. Circulatory System

Question 1

Functions of Circulatory System

Answer 1

1. Carries Blood
2. Transports Substances
3. Helps regulate bp
4. Exchanges nutrients, waste products, and gases with tissues.
5. Direct blood flow to the tissues.

Question 2

2 divisions of circulatory system

Answer 2

1. Pulmonary System
2. Systemic Vessels

Question 3

This transports blood from the right ventricle of the heart through the lungs and back to the left atrium.

Answer 3

Pulmonary Vessels

Question 4

This transports blood from the left ventricle of the heart through the lungs and back to the right atrium.

Answer 4

Systemic Vessels

Question 5

General features of blood vessels structure

Answer 5

1.Tunica Intima
2. Tunica Media
3. Tunica Adventitia

Question 6

3 Main Types of Blood Vessels

Answer 6

1. Artery
2. Vein
3. Capillary

Question 7

Large elastic artery that is the main trunk of the systemic arterial system.

Answer 7

Aorta

Question 8

The first vessel to branch from aortic arch.

Answer 8

Brachiocephalic Artery

Question 9

Normal bp for adults

Answer 9

120mmHg - 80mmHg(D)

Question 10

Returns blood from head, neck, thorax, and upper limbs to the right atrium of the heart.

Answer 10

Superior Vena Cava

Question 11

Returns the blood from abdomen, pelvis, and lower limbs to right atrium of heart.

Answer 11

Inferior Vena Cava

Question 12

A measure of the force blood exerts against the blood vessel walls

Answer 12

Blood Pressure

Question 13

Period of contraction that releases blood from the heart

Answer 13

Systolic Pressure

Question 14

Relaxation of the heart muscle and filling the heart with blood

Answer 14

Diastolic Pressure

Question 15

A method to determine blood pressure that is most often used by professionals

Answer 15

Auscultatory

Question 16

Turbulence of blood flow which produces vibrations in the blood and surrounding tissues

Answer 16

Korotkoff Sounds

Question 17

If the diameter of a blood vessel is small, _______ is greater.

Answer 17

Resistance

Question 18

Difference between the systolic and diastolic pressure

Answer 18

Pulse Pressure

Question 19

Hardening of the arteries and less elastic than normal.

Answer 19

Arteriosclerosis

Question 20

Ejection of blood from left ventricle into the aorta.

Answer 20

Pulse or Pressure Wave

Question 21

Nutrients diffuses across the capillary walls into the interstitial spaces

Answer 21

Capillary Exchange

Question 22

Classification of Mechanisms Controlling Blood Flow

Answer 22

1. Local Control
2. Nervous and Hormonal Control

Question 23

The average arterial pressure throughout one cardiac cycle to perfuse blood to all the tissues of the body to keep them functional.

Answer 23

Mean Arterial Blood Pressure

Question 24

Activate responses keeping the blood pressure within its normal range.

Answer 24

Baroreceptor Reflex

Question 25

Respond to changes in blood concentrations of O2 and CO2 as well as pH

Answer 25

Chemoreceptor Reflexes

Question 26

Helps to control blood pressure but has 4 important hormonal mechanisms

Answer 26

Hormonal mechanisms

Question 27

What are the 4 hormonal Mechanisms

Answer 27

1. Adrenal Medullary Mechanism
2. Renin-Angiotensin-Aldosterone Mechanism
3. Antidiuretic Hormone Mechanism
4. Atrial Natriuretic Mechanism

Question 28

This is most important in controlling blood pressure on a short-term basis.

Answer 28

Baroreceptor Mechanism

Question 29

Sensitive and quickly responds but they respond to large changes in blood pressure.

Answer 29

Chemoreceptor and Adrenal Medullary Reflexes

Question 30

More important in maintaining blood pressure on a long-term basis.

Answer 30

Renin-Angiotensin-Aldosterone, ADH, Atrial Natriuretic Mechanisms