Q1 PHYS Flashcards
BoTox blocks which of the following?
Botox destroys proteins that are needed for exocytosis of ACh
The slowest sensory axons are type___
Type C
The slowest sensory axons are type___
unmyelinated C fibers
Rod sodium channels are regulated by binding what ?
cGMP
what stimulates IGF-1 production by the liver?
Growth hormone
What stimulates IGF-1 production by the liver?
Growth hormone
What neurotransmitter is used by all motor neurons?
acetylcholine
What part of the brain controls the body temp set point ?
Hypothalamus
in the skin, the receptor potential of a mechonosensitive nerve ending is ?
depolarization
in the skin, the receptor potential of a mechonosensitive nerve ending is achieved by ?
depolarization
in the skin, the receptor potential of a mechonosensitive nerve ending is achieved by ?
depolarization (which will trigger AP)
Which neuron is most likely to be an inhibitory neuron?
interneuron
Which of the following is most likely to cause an inhibitory post-synaptic potential (IPSP)?
A. glutamate
B. nitric oxide
C. GABA
D. activation of a Golgi tendon organ
C. GABA
Which ion channel is most commonly associated with hyperpolarization?
A. sodium channel
B. calcium channel
C. chloride channel
D. nicotinic acetylcholine receptor channel
C. Chloride channel
Which of the following is a muscarinic acetylcholine receptor antagonist that can give a positive chronotropic effect?
A. nicotine
B. trimethaphan
C. muscarine
D. atropine
d. atropine
