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

Which artery is most commonly used to feel the pulse at the wrist?

  1. ARadial artery
  2. BBrachial artery
  3. CUlnar artery
  4. DAxillary artery
2.Human anatomyHard

Which muscle is the main flexor of the hip joint?

  1. AGluteus maximus
  2. BIliopsoas
  3. CAdductor magnus
  4. DBiceps femoris
3.Human physiologyMedium

During contraction of a skeletal muscle sarcomere, which band stays the same length?

  1. AH zone
  2. BA band
  3. CThe whole sarcomere
  4. DI band
4.Human physiologyHard

Why does breathing 100% oxygen correct hypoxaemia from a true right-to-left shunt only poorly?

  1. AThe extra oxygen is all exhaled as CO₂
  2. BShunted blood is already fully saturated
  3. CThe shunted blood never comes into contact with alveolar gas
  4. DPure oxygen damages haemoglobin

2Solutions

1.Human anatomy

Answer: A · Radial artery

Why this is the answer

The radial artery lies superficially on the thumb side of the wrist, against the radius, which makes the pulse easy to feel.

Answer

A · Radial artery
2.Human anatomy

Answer: B · Iliopsoas

Why this is the answer

Iliopsoas (psoas major and iliacus) is the strongest hip flexor. Gluteus maximus extends the hip.

Answer

B · Iliopsoas
3.Human physiology

Answer: B · A band

Why this is the answer

In the sliding filament model, filaments slide past each other without shortening. The A band (myosin length) stays the same while the I band and H zone shorten.

Answer

B · A band
4.Human physiology

Answer: C · The shunted blood never comes into contact with alveolar gas

Why this is the answer

Shunted blood bypasses ventilated alveoli and mixes deoxygenated blood into arterial blood. Extra inspired oxygen cannot reach it, unlike in V/Q mismatch or hypoventilation.

Answer

C · The shunted blood never comes into contact with alveolar gas

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