MDS PREP
The absolute refractory period of skeletal muscle is an interval during which
1. The stimulus is more than normally effective
2. The threshold is lowered
3. The muscle is relaxed
4. No stimulus is effective
Physiology
Answer: 2
Excluding the effect of drugs, apnea occurring after hyperventilation of an anesthetized patient results from
1. decreased demand for oxygen.
2. increased cerebral blood flow.
3. decreased carbon dioxide tension.
4. increased hydrogen ion concentration.
Physiology
Answer: 4
The deficiency of which vitamin is not known in new-born child
1. Vit- A
2. Vit-B
3. Vit-c
4. Vit-E
Physiology
Answer: 4
Each of the following is an important function of saliva EXCEPT one. Which one is this EXCEPTION?
1. Provides buffering action
2. Facilitates deglutition
3. Initiates protein digestion
4. Prevents demineralization
Physiology
Answer: 3
A patient with a fully compensated respiratory acidosis has:
1. a normal pCO2
2. a normal plasma pH
3. a positive base excess
4. a normal pO2
Physiology
Answer: 4
The receptor on cardiac muscle for acetylcholine are:
1. Nicotinic 2. Muscarinic
3.á type. 4. â type.
Physiology
Answer: 2
The following hormone does not have any intracellular receptor:
1. Vitamin D3.
2. Cortisone.
3. Adrenaline.
4. Thyroxine.