BIOL 235 Midterm 2 Test Exam
Questions And Answers Verified 100%
Correct
Sodium channels are ______ and potassium channels are ________ during the
relative refractory period ? - ANSWER -closed, open
What do we classify based on amount of myelination, diameters, and propagation
speeds? - ANSWER -Nerve fibers
What is the largest nerve fiber? - ANSWER -A fibers
What do you call a synapse that goes from an axon to cell body? - ANSWER -
axosomatic
What do you call a synapse between 2 axons? - ANSWER -axoaxonic
Synchronization and faster communications are advantages of what? - ANSWER -
electrical synapses
Voltage gated channels are located on which synaptic neuron? - ANSWER -the
presynaptic neuron
An ISPS is a __________________potential - ANSWER -hyperpoalrizing
What kind of receptor contain a NT binding site and an ion channel from the same
protein? - ANSWER -Ionotropic receptor
What are the 2 types of neurotransmitters? - ANSWER -small-molecule NT &
neuropeptide
after an injury to a process of a normal peripheral neuron the nissel bodies break
down into fine granular masses, what is this called? - ANSWER -chromatolysis
, The _____________________ is the space between the dura mater and the wall of
the vertebral canal - ANSWER -epidural space
What are the sub layers of the meninges? - ANSWER -subdural space and
subarachnoid space
What part of the spinal cord contains somatic motor nuclei which provide nerve
impulses for contraction of skeletal muscles? - ANSWER -the anterior (ventral)
gray horns
Which gray horns contain autonomic motor nuclei which regulate activity of
cardiac and smooth muscle as well as glands? - ANSWER -the lateral gray horns
Dermatomes are areas of skin that provide sensory input to the CNS via the
posterior roots of one pair of spinal nerves via the __________ nerve. - ANSWER
-trigeminal (V)
direct motor pathways cause _________ movements - ANSWER -voluntary
What are the 5 parts of a reflex arc? - ANSWER -1. sensory receptor
2. sensory neruon
3. integrating center
4. motor neuron
5. effector
What do you call an arrangement where sensiry nerve impulses enter the spinal
cord on the same side from which the motor nerve impulses leave it? - ANSWER -
Ipsilateral reflex
What reflex operates as a feedback mechanism to control muscle tension by
causing muscle relaxation - ANSWER -tendon reflex
What are these the functions of ?
, 1. mechanical protection
2. homeostatic function
3. circulation - ANSWER -Cerebrospinal fluid
What do the medulla oblongata, pons, midbrain, and the reticular formation make
up? - ANSWER -The brain stem
What carries out these functions?
-control of the ANS
-production of hormones
-regulation of emotion and behavioral patterns and eating and drinking
- control of body temp
-regulation of circadian rhythms and states of consciousness - ANSWER -the
dicephalon which consists of the thalamus and the hypothalamus
the pineal gland is part of the ___________ system - ANSWER -endocrine
What are the roles of the epithalamus? - ANSWER --secrets melatonin via the
pineal gland
-regulates blood pressure, fluid balance, hunger, and thirst
_________ are folds that occur due to the gray matter of the cortex enlarging
much faster than the deeper white matter - ANSWER -Gyri
What kind of tract contains axons that conduct nerve impulses between gyris in
the same hemisphere? - ANSWER -association tracts
what kind of tract contains axons that conduct nerve impulses from gyri in one
cerebral hemisphere to corresponding gyri in other cerebral hemispheres? example
= corpus callosum - ANSWER -commissural tracts
what is the name of the distorted map of the body located in the primary
somatosensory area? - ANSWER -the sensory homunculus
Questions And Answers Verified 100%
Correct
Sodium channels are ______ and potassium channels are ________ during the
relative refractory period ? - ANSWER -closed, open
What do we classify based on amount of myelination, diameters, and propagation
speeds? - ANSWER -Nerve fibers
What is the largest nerve fiber? - ANSWER -A fibers
What do you call a synapse that goes from an axon to cell body? - ANSWER -
axosomatic
What do you call a synapse between 2 axons? - ANSWER -axoaxonic
Synchronization and faster communications are advantages of what? - ANSWER -
electrical synapses
Voltage gated channels are located on which synaptic neuron? - ANSWER -the
presynaptic neuron
An ISPS is a __________________potential - ANSWER -hyperpoalrizing
What kind of receptor contain a NT binding site and an ion channel from the same
protein? - ANSWER -Ionotropic receptor
What are the 2 types of neurotransmitters? - ANSWER -small-molecule NT &
neuropeptide
after an injury to a process of a normal peripheral neuron the nissel bodies break
down into fine granular masses, what is this called? - ANSWER -chromatolysis
, The _____________________ is the space between the dura mater and the wall of
the vertebral canal - ANSWER -epidural space
What are the sub layers of the meninges? - ANSWER -subdural space and
subarachnoid space
What part of the spinal cord contains somatic motor nuclei which provide nerve
impulses for contraction of skeletal muscles? - ANSWER -the anterior (ventral)
gray horns
Which gray horns contain autonomic motor nuclei which regulate activity of
cardiac and smooth muscle as well as glands? - ANSWER -the lateral gray horns
Dermatomes are areas of skin that provide sensory input to the CNS via the
posterior roots of one pair of spinal nerves via the __________ nerve. - ANSWER
-trigeminal (V)
direct motor pathways cause _________ movements - ANSWER -voluntary
What are the 5 parts of a reflex arc? - ANSWER -1. sensory receptor
2. sensory neruon
3. integrating center
4. motor neuron
5. effector
What do you call an arrangement where sensiry nerve impulses enter the spinal
cord on the same side from which the motor nerve impulses leave it? - ANSWER -
Ipsilateral reflex
What reflex operates as a feedback mechanism to control muscle tension by
causing muscle relaxation - ANSWER -tendon reflex
What are these the functions of ?
, 1. mechanical protection
2. homeostatic function
3. circulation - ANSWER -Cerebrospinal fluid
What do the medulla oblongata, pons, midbrain, and the reticular formation make
up? - ANSWER -The brain stem
What carries out these functions?
-control of the ANS
-production of hormones
-regulation of emotion and behavioral patterns and eating and drinking
- control of body temp
-regulation of circadian rhythms and states of consciousness - ANSWER -the
dicephalon which consists of the thalamus and the hypothalamus
the pineal gland is part of the ___________ system - ANSWER -endocrine
What are the roles of the epithalamus? - ANSWER --secrets melatonin via the
pineal gland
-regulates blood pressure, fluid balance, hunger, and thirst
_________ are folds that occur due to the gray matter of the cortex enlarging
much faster than the deeper white matter - ANSWER -Gyri
What kind of tract contains axons that conduct nerve impulses between gyris in
the same hemisphere? - ANSWER -association tracts
what kind of tract contains axons that conduct nerve impulses from gyri in one
cerebral hemisphere to corresponding gyri in other cerebral hemispheres? example
= corpus callosum - ANSWER -commissural tracts
what is the name of the distorted map of the body located in the primary
somatosensory area? - ANSWER -the sensory homunculus
