Circulatory System

Question 1

These vessels bring blood away from the heart

Answer 1

Arteries

Question 2

Gas exchange occurs in these vessels

Answer 2

Capillaries

Question 3

From the arteries, blood travels here before entering the capillaries

Answer 3

Arterioles

Question 4

These structures control the flow of blood into the capillaries

Answer 4

Capillary Sphincters

Question 5

This side of the heart always contains deoxygenated blood

Answer 5

Right side

Question 6

This valve is located between the left atrium and the left ventricle

Answer 6

Bicuspid (Mitral Valve)

Question 7

The endocardium is lined with this type of tissue

Answer 7

Endothelial

Question 8

The outer layer of the heart is called

Answer 8

Epicardium

Question 9

This layer of the heart contains branched, striated cardiac muscle cells

Answer 9

Myocardium

Question 10

This vessels tales deoxygenated blood form the heart to the lungs

Answer 10

Pulmonary Artery

Question 11

These chambers of the heart always pump blood out of the heart

Answer 11

Ventricles

Question 12

This tissue is located between the ventricles of the heart

Answer 12

Interventricular Septum

Question 13

These vessels make up the circulatory system of the heart itself (supplies myocardium)

Answer 13

Coronary Arteries

Question 14

This molecules binds with the iron atom that is associated with the heme molecule located int eh hemoglobin molecule

Answer 14

Oxygen

Question 15

These structures found in both the heart and veins prevent backflow of blood

Answer 15

Valves

Question 16

Red blood cells are also called

Answer 16

Erythrocytes

Question 17

This pigment is located in red blood cells

Answer 17

Hemoglobin

Question 18

This number indicates pressure when the heart is at rest

Answer 18

Diastolic Pressure

Question 19

This number indicated pressure when the heart is contracting

Answer 19

Systolic Pressure

Question 20

This valve is located between the right atrium and right ventricle

Answer 20

Tricuspid

Question 21

These particles in the blood are involved in clotting

Answer 21

Thrombocytes (Platelets)

Question 22

Starting with the SA node, describe how the heart contracts

Answer 22

An electrical impulse starts in the SA node. IT spreads to the atria causing them to contract. The signal then reaches the AV node. Which then travels down the bundles of HIS and stimulate the ventricles to contract. Pumping out of the heart.

Question 23

Write the path that blood flows through the heart beginning with deoxygenated blood entering the heart. Include valves and vessels leading into and out of the heart.

Answer 23

Superior Inferios/ Vena Cava - RA - Tricuspid - RV - Pulmonary

Valve - Pulmonary Artery - Lungs - Biscuspid - LV - Aortic Valve - Aorta - Body

Question 24

Describe the two different paths that blood takes through the body. What occurs during each path?

Answer 24

Heart - Body - Heart = Delivers oxygen to cells and picks up wastes
Heart - Lung - Heart = In lungs CO2 + H2O released and O2 picked up

Question 25

Name the vessels that blood flows through from the heart of the body and back to the heart

Answer 25

Aorta - Heart - Arteries - Arterioles - Capillaries - Venules - Veins - Superior inferior/ VC - Heart

Question 26

Differentiate between veins, arteries, and capillaries in terms of structure and function

Answer 26

Veins - Carry blood towards heart Arteries - Carry blood away from heart Capillaries - Gas exchange occurs with body cells Arteries are thicker. Veins are thinner. Capillaries are 1 cell in thickness.

Question 27

In which body cavity is the heart located?

Answer 27

Thoracic

Question 28

Name the layers of the heart starting with the inside layer and working outward

Answer 28

Endo, Myo, Epicardium

Question 29

Which layer contains branching cardiac muscle

Answer 29

Myocardium

Question 30

Which layer contains endothelial cells

Answer 30

Endocardium

Question 31

Which layer for does the pericardial sac adhere to

Answer 31

Epicardium

Question 32

Where is the pericardial fluid located and what is its function

Answer 32

Space between parietal and visceral. Prevents friction between the two membranes

Question 33

What string-like structures connect the flaps/cusps of the valves to the heart muscles tissue

Answer 33

Chordae Tendineae

Question 34

What is the function of the heart valves

Answer 34

To make sure blood flow goes in the right direction

Question 35

Describe the route that the blood takes through the heart. Begin where deoxygenated blood enters and end with oxygenated blood leaving the heart. Include the names of any valves, arteries, and veins that are part of this process

Answer 35

The deoxygenated blood enters to the right atrium and goes through the tricuspid valve to the right ventricle. Then it goes to the pulmonary vein to the lungs. When oxygenated blood enters it goes through the left atrium to the left ventricle. It passes through the bicuspid valve out aorta to body