Circulatory system

Question 1

Functions of circulation

Answer 1

Transport - respiratory gases, nutrients, waste, mineral salts, hormones, heat
Homeostasis
Disease prevention

Question 2

Arteries

Answer 2

Carry blood away from the heart
High pressure
Oxygenated blood

Question 3

Capillaries

Answer 3

Small vessels within organs
Allow diffusion from the blood to other cells

Question 4

Veins

Answer 4

Carry blood towards the heart
Low pressure
Deoxygenated blood

Question 5

3 layers of veins and arteries

Answer 5

Endothelium
Smooth muscle + elastic fibres
Connective tissue

Question 6

Anastomosis

Answer 6

Where two or more vessels join together

Question 7

Portal veins

Answer 7

Transports blood between two capillary beds, rather than directly to the heart

Question 8

Pulmonary circulation

Answer 8

Only transports blood to and from the lungs for gas exchange
Does not supply any nutrients to tissues
Artery carries deoxygenated blood
Vein carries oxygenated blood

Question 9

Systemic circulation

Answer 9

Provides blood to any organ except the lungs
Provides oxygen and nutrients and removes waste and carbon dioxide

Question 10

Aorta

Answer 10

Main artery leaving the left side of the heart

Question 11

Coronary artery

Answer 11

Supplies the heart

Question 12

Brachial arteries

Answer 12

Supply the forelimbs

Question 13

Carotid arteries

Answer 13

Supply the neck and head

Question 14

Coeliac artery

Answer 14

Supplies the stomach, liver, spleen and pancreas

Question 15

Cranial mesenteric artery

Answer 15

Supplies the small intestine

Question 16

Caudal mesenteric artery

Answer 16

Supplies the large intestine

Question 17

Hepatic portal vein

Answer 17

Drains blood from the small intestine to the liver