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Week 14
Question and Answer
| Question | Answer |
|---|---|
| What is a stimulus-gated channel? | Its an ion channel that opens in response to a sensory stimulus. |
| True or false the speed of a nerve impulse depends on the neuron’s resting potential? | False |
| What is the movement of the membrane potential away from zero called? | Hyperpolarization |
| What is the effect of sympathetic stimulation on the urinary bladder? | It causes relaxation on the urinary bladder. |
| Axon terminals of autonomic neurons release either of two neurotransmitters called? | Norepinephrine and Acetylcholine. |
| Tongue movement is controlled by which cranial nerve? | The hypoglossal |
| Which region of the brain plays a part in the mechanism responsible for emotions by associating sensory impulses with feelings of pleasantness and unpleasantness? | The thalamus |
| When the right cornea senses a tactile stimulus, what happens to the left eye? | The left eye blinks |
| Which is not true of the hormone somatostatin? | It stimulates the secretion of insulin. |
| The term blood type refers to the type of blood cell | Called antigen. |
| Which sphincters function as regulatory valves that reduce the flow of blood through a network of capillaries when they contract and constrict the arterioles? | There called precapillary sphincters |