Transport in Humans 602 assessment

which of the following is correct for both arteries and veins

• A
• B
• C
• D

which of the following is true for the structure labelled X?

• receives impulses from the brain to initiate contraction of the atria
• delays impulses for a fraction of a second before they travel down into the ventricles
• separates the right ventricle from the left ventricle
• conducts impulses very rapidly to the base of the ventricles

the diagram refers to the following graph which shows changes in blood pressure in the left ventricle during the cardiac cycle. valves open and close due to changes in pressure. which of the labels, I,II,III AND IV, correctly identifies the point on the graph when the aortic valve close

• I
• II
• III
• IV
• Option 5

This question refers to the following diagram of the heart and associated blood vessels. The inferiour vena cava is represented by

• I
• II
• III
• IV

Which of the following is the correct sequence of events in a single heartbeat known as the cardiac cycle?

• A
• B
• C
• D

The following table shows the distribution of blood volume, pressure and velocity in a human's vascular system.

• A
• B
• C
• D

the cell labelled X in the diagram is

• an erythrocyte
• a platelet
• a monocyte
• Option 4
• a neutrophil

see diagram. The section labelled X represents the

• pressure in the aorta as the heart empties
• pressure in the ventricles as the heart fills
• atrial pressure as the heart empties
• ventricular pressure as the heart fills

the position of the sinoatrial node is identified by the region labelled

• I
• II
• III
• IV

in the human heart, what is the point of initiation of the mammalian heartbeat?

• purkyne fibres
• sinoatrial node
• node of ranvier
• atrioventricular node