BIO 325 - EXAM 3 STUDY GUIDE
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS | NEW UPDATE
Fill in the blank: ______ results from loss of myelin around axons, and is caused by
________ attacking the myelin which _______ nerve impulses. - ANSWERS 1.
Multiple Sclerosis
2. Demyelination
3. Scrambles
Fill in the blank: ______ is a non-inflammatory degeneration of motor neurons
causing muscle atrophy but does not cause ______ loss, only loss of muscular
control. - ANSWERS 1. Amyotrophic Lateral Sclerosis
2. Sensory/cognitive
Fill in the blank: The worst type of muscular dystrophy is the ______ type, which is
linked to the ______ chromosome and so is found in the _______ sex. -
ANSWERS 1. Duchenne
2. X-linked recessive
3. Male
Fill in the blank: Action potential arrival at a neuromuscular junction releases the
chemical _____ stored in ________ of the nerve into the _______. This chemical
then binds to _______ on the postsynaptic membrane. If enough of the chemical
is bound to the postsynaptic membrane, a(n) _______ may be evoked, which is
, moved deep into the muscle cell through the ________. - ANSWERS 1.
Acetylcholine
2. Pre-synaptic vesicles
3. Post synaptic cleft
3. receptors
4. Action potential
5. Transverse tubules
Fill in the blank: The etiological agent for the Herpes Zoster is a ______ which
infects the _____ in the nervous system and causes the affliction known as
________ - ANSWERS 1. Virus
2. Root ganglia
3. Shingles
Fill in the blank: When _____ ions enter a skeletal muscle sarcomere from the
sarcoplasmic reticulum, they bind to the protein _____ which causes the protein
______ to move, exposing ______ binding sites on ________. - ANSWERS 1.
Calcium
2. Troponin
3. Tropomyosin
4. Myosin head
5. Actin filament
Fill in the blank: If the amount of Ca++ surrounding an axon is ______, it will cause
the 'distance' between threshold voltage and the resting potential voltage to
become ______ making the ability to evoke an action potential in the membrane
______. - ANSWERS 1. Reduced
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS | NEW UPDATE
Fill in the blank: ______ results from loss of myelin around axons, and is caused by
________ attacking the myelin which _______ nerve impulses. - ANSWERS 1.
Multiple Sclerosis
2. Demyelination
3. Scrambles
Fill in the blank: ______ is a non-inflammatory degeneration of motor neurons
causing muscle atrophy but does not cause ______ loss, only loss of muscular
control. - ANSWERS 1. Amyotrophic Lateral Sclerosis
2. Sensory/cognitive
Fill in the blank: The worst type of muscular dystrophy is the ______ type, which is
linked to the ______ chromosome and so is found in the _______ sex. -
ANSWERS 1. Duchenne
2. X-linked recessive
3. Male
Fill in the blank: Action potential arrival at a neuromuscular junction releases the
chemical _____ stored in ________ of the nerve into the _______. This chemical
then binds to _______ on the postsynaptic membrane. If enough of the chemical
is bound to the postsynaptic membrane, a(n) _______ may be evoked, which is
, moved deep into the muscle cell through the ________. - ANSWERS 1.
Acetylcholine
2. Pre-synaptic vesicles
3. Post synaptic cleft
3. receptors
4. Action potential
5. Transverse tubules
Fill in the blank: The etiological agent for the Herpes Zoster is a ______ which
infects the _____ in the nervous system and causes the affliction known as
________ - ANSWERS 1. Virus
2. Root ganglia
3. Shingles
Fill in the blank: When _____ ions enter a skeletal muscle sarcomere from the
sarcoplasmic reticulum, they bind to the protein _____ which causes the protein
______ to move, exposing ______ binding sites on ________. - ANSWERS 1.
Calcium
2. Troponin
3. Tropomyosin
4. Myosin head
5. Actin filament
Fill in the blank: If the amount of Ca++ surrounding an axon is ______, it will cause
the 'distance' between threshold voltage and the resting potential voltage to
become ______ making the ability to evoke an action potential in the membrane
______. - ANSWERS 1. Reduced
