Circulatory System

Question 1

What is the structure and function of veins?

Answer 1

Thin walled muscular tubes that carry blood back to the heart. Have one way valves to prevent blood backflow

Question 2

What is the structure and function of arteries?

Answer 2

Thick walled muscular tubes that carry blood away from the heart. Walls are thick to withstand pressure of blood from heart.

Question 3

What is the structure and function of capillaries?

Answer 3

Tiny tubes that cover all cells of body. Walls of tube are only one cell thick wide to enable quick diffusion of O2/nutrient & CO2/waste.

Question 4

What is the connective tissue circulating through the body “connecting” all parts. What are the four main components that make up this tissue?

Answer 4

Blood.  
Four components are: 
1. Plasma
2. Red Blood Cells
3. White blood cells
4. Platelets

Question 5

What are blood Vessels? What are the 3 types of blood vessels?

Answer 5

A network of tubes that carry blood

Three types of blood vessels are; capillaries, arteries and veins.

Question 6

What do White blood cells do?

Answer 6

fights infection by recognizing and destroying bacteria and viruses.

Question 7

What do red blood cells do?

Answer 7

contains protein hemoglobin which attracts O2/CO2 molecules. RBC transports O2 to cells and CO2 away from cells

Question 8

What do platelet cells do?

Answer 8

Help clot blood

Question 9

What is plasma?

Answer 9

Liquid which carries hormones, wastes and other blood components (RBC, WBC, platelets)

Question 10

What are the nerve cells called that send electrical signal to contract heart?

Answer 10

pacemaker cells

Question 11

How many chambers does the heart have?

Answer 11

Four

Question 12

What is the purpose of the heart?

Answer 12

Pumps blood around body

Question 13

Arteries branch smaller and smaller until they become…

Answer 13

Capillaries

Question 14

What blood vessel returns blood to the heart?

Answer 14

Veins

Question 15

Capillaries branch together to form…

Answer 15

veins

Question 16

Carry blood away from the heart

Answer 16

Arteries

Question 17

What do red blood cells carry?

Answer 17

O2 and CO2

Question 18

What protein in red blood cells carries O2 and CO2?

Answer 18

Hemoglobin

Question 19

What blood component carries nutrients (such as sugar and proteins) and wastes to and from cells?

Answer 19

Plasma

Question 20

What does the right side of the heart do and where does it lead to?

Answer 20

Pumps blood into an artery leading to the lungs?

Question 21

What is the purpose of the circulatory system? What are the components of the circulatory system?

Answer 21

Transports oxygen and nutrients throughout the body, carries away wastes. It is made up of blood, the heart, and blood vessels.

Question 22

What blood vessel has a wall that is only one cell thick?

Answer 22

Capillary

Question 23

What happens when blood cannot get to the brain?

Answer 23

Stroke

Question 24

When the coronary artery becomes completely blocked, what happens?

Answer 24

Heart attack

Question 25

Fill in the blanks: __________ helps to clot __________

Answer 25

1) platelets 2) blood

Question 26

What blood vessels diffuse nutrients to different cells of the body?

Answer 26

Capillaries

Question 27

What are the symptoms of a heart attack?

Answer 27

Chest pain, nausea, sweating, dizziness

Question 28

What diagnoses a heart attack and how?

Answer 28

An EKG. It helps measure the electrical activity of how the heart is beating (regularly or irregularly)