The Heart and blood

Question 1

What are the four sections of the heart?

Answer 1

Left atrium, Right atrium, Left ventricle, Right ventricle

Question 2

Two types of valves in the heart

Answer 2

Atrioventricular and Semilunar valves

Question 3

Function of the Semilunar valves?

Answer 3

Separates ventricles from arteries they pump blood into

Question 4

Function of Atrioventricular valves?

Answer 4

Separates the atria and ventricles

Question 5

Functions of valves in the heart?

Answer 5

Ensures directional flow of blood in the heart

Question 6

What side of the heart has a thicker ventricular wall and why?

Answer 6

The left, due to it having to pump blood a much longer distance

Question 7

What separates the two sides of the heart?

Answer 7

The septum

Question 8

What parts of the heart does blood flow INTO?

Answer 8

The atria

Question 9

What are the three main functions of the cardiovascular system?

Answer 9

Transport of Oxygen, Co2 and nutrients, regulating body temperature and clotting of open wounds

Question 10

What is the liquid part of blood?

Answer 10

Plasma

Question 11

What parts of the blood are responsible for clotting?

Answer 11

Platelets

Question 12

What changes occurs in platelets before clotting

Answer 12

Fibrinogen to Fibrin

Question 13

What makes up Most of blood?

Answer 13

RBCs

Question 14

Ratio of RBC to WBC

Answer 14

600-800:1

Question 15

Two kinds of WBC

Answer 15

Phagocytes and Lymphocytes

Question 16

Why are red blood cells biconcave discs?

Answer 16

for larger surface area in diffusion and to be thin for diffusion

Question 17

How do lymphocytes fight antigens?

Answer 17

They produce a corresponding antibody to them

Question 18

How do phagocytes fight antigens?

Answer 18

Engulf them and destroy them