11. Which of the following actions does not occur during exhalation in man?
- A. Thoracic cavity decreases in volume
- B. Diaphragm flattens
- C. Ribs move down and in
- D. Air pressure increases in the thoracic cavity
12. 
The diagram above is an illustration of the urinary tubule in a mammal. Which of the following substances is found in the part labelled II only?
- A. Lipid
- B. Glucose
- C. Urea
- D. Uric acid
13.
The diagram above is an illustration of the urinary tubule in a mammal. The part which contains lowest concentration of urea is labelled
- A. I
- B. II
- C. III
- D. IV
14.
The diagram above is an illustration of the urinary tubule in a mammal. Which of the following substances is greater in concentration in the part labelled IV when compared to that part labelled I?
- A. Lipid
- B. Glucose
- C. Urea
- D. Uric acid
15. Deamination of amino acids in the liver produces
- A. blood sugar
- B. glycogen
- C. bile
- D. urea
16. Which of the following glands also serves as an exocrine gland?
- A. Ovary
- B. Pancreas
- C. Adrenal
- D. Thyroid
17. Which of the following sequences is the correct route of the transmission of impulses along a reflex arc?
- A. \(Receptor\to sensory neuron \to synapse \to intermediate neuron \to synapse \to motor neuron \to effector\)
- B. \(Receptor \to motor neuron \to synapse \to intermediate neuron \to synapse \to sensory neuron \to effector\)
- C. \(Effector \to intermediate neuron \to synapse \to motor neuron \to synapse \to sensory neuron \to receptor\)
- D. \(Effector \to motor neuron \to synapse \to sensory neuron \to synapse \to intermediate neuron \to receptor\)
18. When viewing an object that is close to the human eye, the
- A. eye lens becomes thin
- B. ciliary muscles relax
- C. suspensory lens become taut
- D. eye lens becomes fat
19.
The diagram above is an illustration of the human sperm. The part labelled I is the
- A. acrosome
- B. nucleus
- C. mitochondrion
- D. tail
20.
In the diagram of the human sperm above, the function of the part labelled II is to
- A. fuse the ovum during fertilization
- B. generate the energy for the sperm to swim to the fallopian tube
- C. help the sperm to swim forward
- D. dissolve the membrane of the egg during fertilization
