Anatomy and Physiology: cram pack

Formula sheets, the key method steps for every topic and 4 practice problems, with full solutions at the back.

New problemsBack to the course

In the print window, choose “Save as PDF” to keep a copy on your device.

1Practice problems

1.Human anatomyMedium

In which part of the nephron does most reabsorption of water and sodium take place?

  1. ACollecting duct
  2. BProximal convoluted tubule
  3. CDistal convoluted tubule
  4. DLoop of Henle
2.Human anatomyHard

After a fracture of the midshaft of the humerus, a patient cannot extend the wrist and fingers ("wrist drop"). Which nerve is most likely injured?

  1. AAxillary nerve
  2. BRadial nerve
  3. CMedian nerve
  4. DUlnar nerve
3.Human physiologyMedium

Cardiac output equals heart rate multiplied by:

  1. APeripheral resistance
  2. BStroke volume
  3. CEjection fraction
  4. DBlood pressure
4.Human physiologyHard

In pernicious anaemia, autoimmune destruction of gastric parietal cells leads to anaemia because:

  1. APepsin is lost, so haemoglobin cannot be made
  2. BGastrin is lost, so the bone marrow is no longer stimulated
  3. CIntrinsic factor is lost, so vitamin B12 is not absorbed
  4. DAcid is lost, so iron is never absorbed in any form

2Solutions

1.Human anatomy

Answer: B · Proximal convoluted tubule

Why this is the answer

The proximal convoluted tubule reabsorbs about two thirds of the filtered sodium and water, plus nearly all glucose and amino acids.

Answer

B · Proximal convoluted tubule
2.Human anatomy

Answer: B · Radial nerve

Why this is the answer

The radial nerve runs in the radial (spiral) groove of the humeral shaft. It supplies the wrist and finger extensors, so injury causes wrist drop.

Answer

B · Radial nerve
3.Human physiology

Answer: B · Stroke volume

Why this is the answer

CO = HR × SV. At rest about 70 beats/min × 70 mL ≈ 5 L/min.

Answer

B · Stroke volume
4.Human physiology

Answer: C · Intrinsic factor is lost, so vitamin B12 is not absorbed

Why this is the answer

Parietal cells secrete intrinsic factor, needed for B12 absorption in the terminal ileum. B12 deficiency impairs DNA synthesis and causes megaloblastic anaemia.

Answer

C · Intrinsic factor is lost, so vitamin B12 is not absorbed

ExamProblems · examproblems.com/courses/anatomy-and-physiology