BIO 253 Test 4 Anatomy UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Neuron - CORRECT ANSWER - a nerve cell; the basic building block of the nervous
system
cell body - CORRECT ANSWER - contains nucleus and organelles; between the dendrites
(branching extensions) and axon (looks like a tail)
Nissl bodies - CORRECT ANSWER - Rough endoplasmic reticulum in neuron
nucleus - CORRECT ANSWER - Contains DNA (part labeled "H")
Dendrites - CORRECT ANSWER - Branchlike parts of a neuron that are specialized to
receive information.
Axon - CORRECT ANSWER - the extension of a neuron (looks like a tail), ending in
branching terminal fibers, through which messages pass to other neurons or to muscles or glands
Schwann cells (PNS) - CORRECT ANSWER - Form myelin sheath in the peripheral
nervous system
spinal cord - CORRECT ANSWER - Nerves that run up and down the length of the back
and transmit most messages between the body and brain
meninges of spinal cord - CORRECT ANSWER - dura mater, arachnoid mater, pia mater;
connective tissue surrounding the spinal cord
, dura mater - CORRECT ANSWER - thick, outermost layer of the meninges surrounding
and protecting the brain and spinal cord
arachnoid mater - CORRECT ANSWER - weblike middle layer of the three meninges
pia mater - CORRECT ANSWER - thin, delicate inner membrane of the meninges;
directly surrounds the spinal cord
denticulate ligaments - CORRECT ANSWER - extensions of pia mater that secure cord to
dura mater
epidural fat - CORRECT ANSWER - epidural space (highlighted yellow)
anterior median fissure - CORRECT ANSWER - a groove along the anterior midline of
the spinal cord that incompletely divides it into symmetrical halves
posterior median sulcus - CORRECT ANSWER - a shallow vertical groove dividing the
spinal cord throughout its whole length in the midline posteriorly.
posterior gray horns - CORRECT ANSWER - contains somatic and visceral SENSORY
nuclei in the spinal cord
anterior gray horns - CORRECT ANSWER - contain somatic MOTOR nuclei in the spinal
cord
anterior white column - CORRECT ANSWER - lies between the anterior gray horns and
the anterior median fissure
lateral white column - CORRECT ANSWER - between the anterior and posterior columns
ACTUAL Exam Questions and CORRECT
Answers
Neuron - CORRECT ANSWER - a nerve cell; the basic building block of the nervous
system
cell body - CORRECT ANSWER - contains nucleus and organelles; between the dendrites
(branching extensions) and axon (looks like a tail)
Nissl bodies - CORRECT ANSWER - Rough endoplasmic reticulum in neuron
nucleus - CORRECT ANSWER - Contains DNA (part labeled "H")
Dendrites - CORRECT ANSWER - Branchlike parts of a neuron that are specialized to
receive information.
Axon - CORRECT ANSWER - the extension of a neuron (looks like a tail), ending in
branching terminal fibers, through which messages pass to other neurons or to muscles or glands
Schwann cells (PNS) - CORRECT ANSWER - Form myelin sheath in the peripheral
nervous system
spinal cord - CORRECT ANSWER - Nerves that run up and down the length of the back
and transmit most messages between the body and brain
meninges of spinal cord - CORRECT ANSWER - dura mater, arachnoid mater, pia mater;
connective tissue surrounding the spinal cord
, dura mater - CORRECT ANSWER - thick, outermost layer of the meninges surrounding
and protecting the brain and spinal cord
arachnoid mater - CORRECT ANSWER - weblike middle layer of the three meninges
pia mater - CORRECT ANSWER - thin, delicate inner membrane of the meninges;
directly surrounds the spinal cord
denticulate ligaments - CORRECT ANSWER - extensions of pia mater that secure cord to
dura mater
epidural fat - CORRECT ANSWER - epidural space (highlighted yellow)
anterior median fissure - CORRECT ANSWER - a groove along the anterior midline of
the spinal cord that incompletely divides it into symmetrical halves
posterior median sulcus - CORRECT ANSWER - a shallow vertical groove dividing the
spinal cord throughout its whole length in the midline posteriorly.
posterior gray horns - CORRECT ANSWER - contains somatic and visceral SENSORY
nuclei in the spinal cord
anterior gray horns - CORRECT ANSWER - contain somatic MOTOR nuclei in the spinal
cord
anterior white column - CORRECT ANSWER - lies between the anterior gray horns and
the anterior median fissure
lateral white column - CORRECT ANSWER - between the anterior and posterior columns
