Transport in animals

Question 1

Arterioles

Answer 1

Small blood vessels that distribute blood from the arteries to the capillaries.

Question 2

Arteries

Answer 2

Vessels that carry the blood away from the heart.

Question 3

Atria

Answer 3

Thin-walled chambers of the heart that receive the blood from the veins and then pass it to the ventricles.

Question 4

Atrio-ventricular valves

Answer 4

Valves between the atria and the ventricles, which ensure blood flows in the correct direction (from the atria to the ventricles).

Question 5

Atrio-ventricular node (AVN)

Answer 5

A patch of tissue, in the heart, at the top of the septum that conducts the excitation wave from the atria to the ventricles.

Question 6

Aorta

Answer 6

The main artery of the body in mammals.

Question 7

Atrial systole

Answer 7

The phase in the cardiac cycle (the heartbeat) where both atria, left and right, contract and pump blood into the ventricles.

Question 8

Blood

Answer 8

The fluid used to transport materials around the body.

Question 9

Bradycardia

Answer 9

A slow heart rythm.

Question 10

Closed circulatory system

Answer 10

A circulatory system in which the blood is held in vessels.

Question 11

Single circulatory system

Answer 11

A circulatory system in which the blood flows through the heart once for each circuit of the body.