L9 Neuromuscular Junction

Question 1

What is a synapse?

Answer 1

A junction between a presynaptic neuron and a postsynaptic neuron

Question 2

What are the 2 types of synapses?

Answer 2

1. Excitatory synapse
2. Inhibitory synapse

Question 3

What are the 2 general types of synaptic transmission?

Answer 3

1. Electrical
2. Chemical

Question 4

NMJ is the _____ between terminal branch of nerve and ______.

Answer 4

junction
muscle fibers

Question 5

A neurotransmitter is a _____ compound that transmits an_____ from a nerve cell to a _____ cell.

Answer 5

chemical
impulse
target

Question 6

Neuromodulators participate in ______ synapses by acting on more ____ neurons.

Answer 6

nondirected
distant

Question 7

Neurohormones travel in the ______ to reach their final targets.

Answer 7

blood supply

Question 8

What are the neuromuscular blockers?

Answer 8

1. Curare
2. Bungarotoxin
3. Succinylcholine and Carbamylcholine

Question 9

Curare attach to _____ receptors, blocking ____ from binding and do not open the ion channels.

Answer 9

nicotinic
ACh

Question 10

Bungarotoxin prevents _____ release from_______ neuron.

Answer 10

ACH
presynaptic

Question 11

Myasthenia gravis is a chronic _____ disorder in which ______ destroy the communication between nerve and _____, resulting in weakness of skeletal muscles. It is caused by a problem with the _____ sent between the nerves and muscles.

Answer 11

autoimmune
antibodies
muscle
signals

Question 12

Features of myasthenia gravis are?

Answer 12

1. Drooping of eyelids
2. Weakness in arms legs
3. Change of voice
4. Swallowing difficulty

Question 13

Rigor mortis is the _____ of the muscle after _____. It is caused by the depletion of ____ that fails to ____ the _____.

Answer 13

stiffening
death
ATP
detach
cross-bridge