Circulatory system

Question 1

What are the 4 major chambers?

Answer 1

Right atrium & ventricle, left atrium & ventricle

Question 2

What are the major arteries and veins in the heart?

Answer 2

Vena Cavas, Pulmonary Artery & Vein, Aorta

Question 3

Valves?

Answer 3

tricuspid > pulmonary > mitral > aortic

Question 4

What is an ASD?

Answer 4

Atrial Septal Defect: a hole between the atrial (upper) chambers

Question 5

Define systemic circulation

Answer 5

blood circulation from the heart to the rest of the body and back

Question 6

Define Pulmonary circulation

Answer 6

between heart and lungs

Question 7

What are the 3 types of blood vessels?

Answer 7

Arteries, Veins, and Capillaries

Question 8

Define Arteries:

Answer 8

Carry blood AWAY from heart,

Except for pulmonary artery, all carry oxygenated blood

Question 9

Define veins:

Answer 9

After capillaries, blood goes to veins

Carries blood BACK to the heart

Question 10

Define Cappillaries

Answer 10

Smallest blood vessels

Only one cell thick

Allows for gas exchange and nutrients to pass through the capillary walls

Question 11

What is an SA node?

Answer 11

The SA (sinus) node represents a cluster of myocytes with pacemaker activity

Question 12

What are the 4 parts of blood?

Answer 12

Plasma, red blood cells, white blood cells, and platelets

Question 13

Plasma:

Answer 13

Fluid portion of blood; 55% of your blood.

Question 14

White blood cells:

Answer 14

DO NOT contain hemoglobin, contain nuclei, helps guard against infection, parasites, bacteria

Question 15

Red blood cells:

Answer 15

Also known as erythrocytes, shaped like disks.

Formed in the red bone marrow

Contain no nuclei and circulate for an avg 120 days