Curriculum
Course: AQA A Level Biology 7402
Login

Curriculum

AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

3.5.1 Mammalian Circulation – Exam questions

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 10
  • Passing grade: B+
Start Quiz
1.
The pacemaker of the heart is the:
AVN
SAN
Bundle of His
Purkyne fibres
2.
During ventricular systole the AV valves are:
Open
Partly open
Closed
Absent
3.
Why is the AVN delay important?
Lets atria empty before ventricles contract
Increases heart rate
Closes semilunar valves
Stops fibrillation
4.
Which vessel has valves along its length?
Aorta
Capillary
Pulmonary artery
Vein
5.
Cardiac output with SV 70 cm3 and HR 60 bpm:
130 cm3
4200 cm3 min-1
1.2 dm3
7000 cm3 min-1
6.
Thrombin converts:
Prothrombin to thrombin
Fibrin to fibrinogen
Fibrinogen to fibrin
Plasma to serum
7.
Which statement best describes Cardiac output?
The pacemaker in the right atrium that initiates each heartbeat.
Volume of blood pumped by one ventricle per minute.
Build-up of fatty plaque (atheroma) in artery walls.
Blood passes through the heart twice per complete circuit: pulmonary and systemic.
8.
Which statement best describes Sinoatrial node?
Volume of blood pumped by a ventricle per beat.
The pacemaker in the right atrium that initiates each heartbeat.
Heart muscle contracts without nervous stimulation.
Conducting fibres that spread the impulse through the ventricle walls from the apex.
9.
Which statement best describes Atherosclerosis?
Conducting fibres that spread the impulse through the ventricle walls from the apex.
Build-up of fatty plaque (atheroma) in artery walls.
Tissue that delays the impulse then passes it to the bundle of His.
Volume of blood pumped by a ventricle per beat.
10.
Which statement best describes Atrioventricular node?
Blood passes through the heart twice per complete circuit: pulmonary and systemic.
Tissue that delays the impulse then passes it to the bundle of His.
Heart muscle contracts without nervous stimulation.
The sequence of events in one heartbeat: atrial systole, ventricular systole, diastole.
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Part of 3. Exchange and Transport — see every lesson and quiz in this unit.
Accepted payment methods