Circulatory And Respiratory System

Question 1

What are the functions of the circulatory system?

Answer 1

The functions of the circulatory system is to deliver nutrients and to remove waste products from the body’s cells.

Question 2

What are the two main things delivered by the circulatory system?

Answer 2

Nutrients to the body

Removal of waste

Question 3

Why are these functions so important? (Previous answer was Nutrients to the body,
Removal of waste)

Answer 3

Because all other systems depend on the nutrients to function and the waste removal to stay healthy and get rid of toxins

Question 4

What is the main waste involved in the circulatory system?

Answer 4

Carbon dioxide

Question 5

What are the three components of the circulatory system?

Answer 5

The heart, blood vessels and blood

Question 6

In basic terms, what is the heart?

Answer 6

The heart is a muscular pump designed to pump blood throughout the circulatory system.

Question 7

What is the difference between Atria and Ventricles?

Answer 7

Atria are the upper chambers that receive blood and ventricles are the lower chamber that pump blood.

Question 8

What role does the Septum play?

Answer 8

The septum divides the heart into two pumps

Question 9

Which side of the heart transports oxygenated blood?

Answer 9

The left

Question 10

Which side of the heart transports de-oxygenated blood?

Answer 10

The right

Question 11

What are the roles of the valves in the heart?

Answer 11

The valves allow blood to travel in only one direction.

Question 12

Where are the valves located in the heart?

Answer 12

Between the atria and the ventricles and at the entrance to the arteries from the heart.

Question 13

What is an average heart resting rate?

Answer 13

60-80 beats per minute

Question 14

What are five points about the structure and function of the arteries?

Answer 14

Arteries cause blood to flow away from the heart, they carry oxygen rich blood, aorta is the largest artery in the body, arteries have a thick elastic muscular wall, the left ventricles pumps blood to the arteries.

Question 15

What do coronary arteries do?

Answer 15

Coronary arteries supply blood to the heart muscle.

Question 16

Why are coronary arteries so important?

Answer 16

Because the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood must be carried away

Question 17

What are five points about the structure and function of capillaries?

Answer 17

Capillaries are the smallest of the body’s blood vessels. They are only one cell thick, and they are the sites of the transfer of oxygen and other nutrients from the bloodstream to other tissues in the body; they also collect carbon dioxide waste materials and fluids for return to the veins.

Question 18

What are five points about the structure and function of veins?

Answer 18

Veins carry deoxygenated blood back to the heart. Structure of a vein consists of three main layers. The outer layer is connective tissue, called tunica adventitia or tunica externa; a middle layer of smooth muscle called the tunica media, and the inner layer lined with endothelial cells called the tunica intima.

Question 19

How do the muscles of the body help return blood to the heart?

Answer 19

The veins contact forcing the blood back up to the heart.

Question 20

What are the three components of blood?

Answer 20

Red blood cells, white blood cells and platelets.

Question 21

What do red blood cells do?

Answer 21

They carry oxygen and carbon dioxide around the body.

Question 22

What do white blood cells do?

Answer 22

They fight of disease and any foreign matter in the body

Question 23

What do platelets do?

Answer 23

They cause blood to clot when a blood vessel in damaged

Question 24

What is plasma?

Answer 24

A clear yellowish liquid in which the blood cells are suspended. 90% water

Question 25

What is haemoglobin

Answer 25

The substance in red blood cells that oxygen attaches to. This allows oxygen to be carried around the body.

Question 26

What is the difference between the systematic and pulmonary circuits?

Answer 26

Systematic is when blood is pumped from the heart to the arteries to the body and back to the heart. Pulmonary circulation is when blood is pumped from the heart to the lungs and back again.

Question 27

What is the path of the blood through the major structures of the heart?

Answer 27

Right artium ➡️ Right ventricle ➡️ Lungs ➡️ Left atrium ➡️ Left ventricle ➡️ Aorta ➡️ Rest of the body ➡️ Back to the right atrium.

Question 28

How can the circulatory system regulate body temperature?

Answer 28

As blood flows past cells heat will move from the blood to the cells -or- the other way from the cells to the blood. This exchange of heat keeps all the body parts at the same temperature

Question 29

What is the difference between Systolic and Diastolic Blood Pressure?

Answer 29

Systolic blood pressure is a measure of how much pressure is developed when the heart pumps oxygen rich blood into the aorta and out. Diastolic blood pressure is a measure of the pressure of the blood in the arteries as the heart relaxes and fills.

Question 30

Define heart rate

Answer 30

The number of heartbeats per unit of time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart)

Question 31

Define stroke volume

Answer 31

The volume of blood pumped from the left ventricle of the heart in one beat

Question 32

Define cardiac output

Answer 32

The volume of blood pumped around the body in one minute. Volume X heart rate

Question 33

How much blood can be pumped per minute?

Answer 33

per beat, the average adult cardiac output (amount of blood pumped out by each ventricle in 1 minute) is 5 liters

Question 34

What are alveoli surrounded by?

Answer 34

Alveoli are surrounded by tiny blood vessels called capillaries

Question 35

what is the average amount of times a person breathes during respiration?

Answer 35

12-18 times per minute

Question 36

How does air get through our lungs to the body?

Answer 36

Air travels through the bronchial tubes and ends up in the alveoli where oxygen is extracted

Question 37

Which side of the heart receives deoxygenated blood and which side receives oxygenated blood?

Answer 37

The right side of the heart receives deoxygenated blood. And left side receives oxygenated blood

Question 38

What are the two top sections of the heart?

Answer 38

Left and right atriums

Question 39

What are the two bottom sections of the heart?

Answer 39

Left and right ventricles