The Heart: Circulatory System

Question 1

What is the Functions of Cardiovascular System? (4)

Answer 1

1. Regulates Blood Supply
2. Generates Blood Pressure
3. Route’s Blood
4. Ensures 1-way blood flow.

Question 2

Structures of Heart

Answer 2

a. Heart Characteristics
b. Heart Covering
c. Heart Layers
d. Cardiac Muscle
e. Atria
f. Ventricle

Question 3

Upper Portion (Atria)

Answer 3

Holding Chambers

Question 4

Small thin, walled, contract minimally to push blood into ventricles

Answer 4

Atria

Question 5

Separates right and left atria

Answer 5

Interatrial septum

Question 6

Lower portion (Ventricles)

Answer 6

Pumping Chambers

Question 7

Thick, strong walled, contract forcefully to propel blood out of heart

Answer 7

Ventricles

Question 8

Separates right and left ventricles

Answer 8

Interventricular Septum

Question 9

Carries blood from heart to lungs

Answer 9

Right side of heart: Pulmonary Circuit

Question 10

Receives blood from 3 places

Answer 10

Right atrium

Question 11

3 ways to enter the blood

Answer 11

Superior Vena Cava
Inferior Vena Cava
Coronary Sinus

Question 12

Opens into pulmonary trunk

Answer 12

Right Ventricle

Question 13

Splits into right and left pulmonary arteries

Answer 13

Pulmonary trunk

Question 14

Carry blood away from heart to lungs

Answer 14

Pulmonary arteries

Question 15

Left side of heart

Answer 15

systemic circuit

Question 16

Carries blood from heart to body

Answer 16

Systemic circuit

Question 17

Openings (pulmonary veins) that receives blood from lungs

Answer 17

Left atrium

Question 18

Opens into aorta

Answer 18

Left ventricle

Question 19

Thicker, contracts more forcefully higher blood pressure than right ventricle has to get to body

Answer 19

Left ventricle

Question 20

Carries blood from left ventricle to body

Answer 20

Aorta

Question 21

2 Parts of circuit of the heart

Answer 21

A pulmonary circuit
B. Systemic Circuit

Question 22

What is the three blood supply?

Answer 22

Coronary arteries
Left coronary artery
Right coronary artery

Question 23

Supply blood to heart wall

Answer 23

Coronary arteries

Question 24

Originate from base of aorta (above aortic semilunar valve)

Answer 24

Coronary arteries

Question 25

Has a three branches

Answer 25

Left coronary artery

Question 26

Supply blood to anterior heart wall and left ventricle

Answer 26

Left coronary artery

Question 27

Originates on right side of aorta

Answer 27

Right coronary artery

Question 28

Supply plot to right ventricle

Answer 28

Right coronary artery

Question 29

Changes in membrane channels permeability are responsible for producing actions potentials and this called peacemaker potential

Answer 29

Action potential in cardiac muscle

Question 30

Heart is to side-by-side pumps

Answer 30

right and left

Question 31

Primers for pumps

Answer 31

Atria

Question 32

Power pumps

Answer 32

Ventricles

Question 33

Repetitive pomping action which includes contraction and relaxation

Answer 33

Cardiac cycle

Question 34

Contraction produced pressure changes within heart chambers

Answer 34

Cardiac muscle

Question 35

It is used to hear lungs and heart sounds

Answer 35

Stethoscope

Question 36

First sound ? Second sound ? (Heart)

Answer 36

Lubb Dupp

Question 37

Due faulty valves

Answer 37

Murmurs

Question 38

Volume of blood pumped per ventricle per contraction

Answer 38

70 ml/beat

Question 39

Number of heartbeats in one minute

Answer 39

72 beats/mins

Question 40

Normal blood pressure (systolic)

Answer 40

Less than 120

Question 41

Normal blood pressure (diastolic)

Answer 41

Less than 80

Question 42

Nervous system that speeds up heart rate

Answer 42

Sympathetic nervous system

Question 43

Primary vagus nerve, fibers slow and steady the heart rate

Answer 43

Parasympathetic nervous system