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In: Anatomy and Physiology

Question 57 In a chemical synapse, the synaptic bulbs of the presynaptic neuron have _____, while...

Question 57

In a chemical synapse, the synaptic bulbs of the presynaptic neuron have _____, while the membrane of the postsynaptic neuron has _____.

Question 57 options:

voltage-gated channels; synaptic vesicles

ligand-gated channels; synaptic vesicles

synaptic vesicles; voltage-gated channels

synaptic vesicles; ligand-gated channels

voltage-gated channels; ligand gated channels

Question 59

Which of the following is CORRECT?

Question 59 options:

Visceral senses are special senses.

Information for the general senses is carried by free nerve endings.

Sensory neurons for touch can also carry pain impulses.

Somatic senses are special senses.

All of these are correct.

Question 60

Glaucoma can be dangerous because it increases intraocular pressure.

Question 60 options:

True
False

Solutions

Expert Solution

Answer:

57.

In a chemical synapse, the synaptic bulbs of the presynaptic neuron have synpatic vesicles while the membrane of the postsynaptic neuron has ligand gated channels.

EXPLANATION: The synpatic bulb of a presynaptic neuron contains synpatic vesicles which contains neurotransmitters. these neurotransmitters travels across the synaptic cleft and binds to ligand gated channels present on postsynaptic neuron. Therefore other options stand incorrect.

59.  Information for the general senses is carried by free nerve endings.

EXPLANATION: Special senses are those which are carried by special sense organs like eye, ear, nose, tongue. Somatic senses and Visceral senses are general senses as there is no specialised organ devoted for their sensation. Moreover, pain sensation and touch sensation have different neuron for their transmission. Therefore, other options are incorrect.

Information from the general senses have free nerve ending as it's receptor, therefore the option is correct.

60. True

EXPLANATION: Glaucoma arises due to increase in intraocular pressure.

Sydney Mullin answered 1 year ago
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