Circulatory System

In which of the following phases of the cardiac cycle is a pulse generated?

• Atrial systole

• Atrial diastole

• Ventricular systole

• Ventricular diastole

Identify the mammalian blood cell shown.

• macrophage

• red blood cell

• neutrophil

• lymphocyte

Tags

NGSS.MS-LS1-3

The oxygen dissociation curve for human haemoglobin is shown. Which range of partial pressures of oxygen would found in pulmonary arteries?

• Between 0 and 3 kPa

• Between 3 and 6 kPa

• Between 6 and 9 kPa

• Between 9 and 12 kPa

Where is the sino-atrial node located?

• I

• II

• III

• IV

The diagram shows the pressure in the left side of the heart. The semi-lunar valves close at

• I

• II

• III

• IV

Tags

NGSS.HS-LS1-3

The small surge in pressure in region X is caused by

• atrial diastole

• atrial systole

• ventricular diastole

• ventricular systole

What is the approximate magnification of the photomicrograph of the human blood smear shown?

• x 700

• x 170

• x 70

• x 15

The graph below shows the oxygen dissociation curve for haemoglobin at pH 6.8 and 7.5. The percentage saturation of haemoglobin in the blood leaving an active muscle is shown at

• A

• B

• C

• D

Tags

NGSS.HS-LS1-3

Which of the following is correct for BOTH arteries and veins?

• A

• B

• C

• D

The inferior vena cava is represented by

• I

• II

• III

• IV