9.1

Question 1

Blood is pumped by the -

Answer 1

heart

Question 2

Blood travels in -

Answer 2

blood vessels

Question 3

Artery or Arteries

Answer 3

carry blood sent from the heart.

Question 4

Vein or Veins

Answer 4

carry blood to the heart.

Question 5

Arterioles

Answer 5

small arteries

Question 6

Venules

Answer 6

small veins

Question 7

Valves

Answer 7

ensure a one-way flow of blood.

Question 8

The circulatory system is made of -

Answer 8

blood vessels
heart ( a pump)
valves

Question 9

A Fish’s heart has -

Answer 9

one atrium

one vertical

Question 10

Single circulation

Answer 10

The blood goes through the heart once a complete circuit.

Question 11

The circulation of a Fish’s

single circulation

Answer 11

1. the atrium sends deoxygenated blood to the gills where it is oxygenated. (blood pressure is lost)
2. oxygenated blood goes through the body capillaries of the fish before returning back to the heart.

Question 12

What makes the circulatory system of a fish inefficient?

Answer 12

It cannot maintain blood pressure.

Question 13

Double circulation of a human

Answer 13

1. the right side of the heart collects deoxygenated blood from the body and pumps it to the lungs.

(builds up pressure before it pumps it to the lungs.)

2. the left side of the heart collects oxygenated blood form the lungs and pumps it to the body.

(builds up pressure before it pumps it to the body.)

Question 14

Advantages of a double circulatory system

Answer 14

Maintains the blood pressure

Question 15

Double circulation is made up of two parts -

Answer 15

Pulmonary circulation

Systematic circulation

Question 16

Pulmonary circulation

Answer 16

the circulation through the lungs

Question 17

Systematic circulation

Answer 17

the circulation around the body.