Cardio-respiratory System

The cardiovascular system refers to the interaction of ...

• Heart

• Lungs

• Blood vessels

• Blood

• Alveoli

Which of the following terms best describes this "The constriction of blood vessels to reduce blood flow."

• Vasodilation

• Vasoconstriction

• Vascular shunting

• Hypothermia

"The redistribution of blood which causes an increase in blood flow to active areas whilst causing a reduction to inactive areas"​ *Select the correct term*

• Blood pressure

• Vasodilation

• vasoconstriction

• vascular shunting

Veins are a blood vessel. *Select all the properties/strcutures that apply to veins*

• Contain valves

• Returns blood back to the heart

• Small lumen (carries blood at high pressure)

• Thin, inelastic walls

Haemoglobin is a red protein within red blood cells. Its function is to ...

• Carry blood around the body

• Bind with oxygen to transport around the body

• carry red blood cells

he heart is a muscular pump which means that it contracts and relaxes to pump blood around the body. *Which of the following statements are correct?*

• systole - relaxation of the heart

• systole - contraction of the heart

• Diastole - relaxation of the heart

• Diastole - contraction of the heart

A valve is a mechanism within the heart which prevents backflow of blood.

• True

• False

Which of the following statement(s) are true about the heart? *Select two*

• It contains four chambers, two atria and two ventricles

• Gaseous exchange occurs within the heart

• the heart is not a muscle

• the heart contains valves

The heart has ......... chambers. (hint: a number)

Blood pressure is the force of the blood against the walls of blood vessels.

• True

• False