BIOL 207 Rourke Exam 2 || Graded A+.
dendrites correct answers branchlike parts of a neuron that are specialized to receive information
axon hillock correct answers the conical region of a neuron's axon where it joins the cell body;
typically the region where nerve signals is generated.
myelin sheath correct answers a layer of fatty tissue segmentally encasing the fibers of many
neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from
one node to the next
nodes of ranvier correct answers gaps in the myelin sheath to which voltage-gated sodium
channels are confined
axon terminals correct answers branches at the end of the axon that contain tiny pouches, or sacs,
called synaptic vesicles
central nervous system correct answers made up of the brain an the spinal cord
sensory neuron correct answers neurons that carry incoming information from the sensory
receptors to the brain and spinal cord; afferent
interneuron correct answers central nervous system neurons that internally communicate and
intervene between the sensory inputs and motor outputs
motor neuron correct answers a neuron that sends an impulse to a muscle or gland, causing the
muscle or gland to react; efferent
peripheral nervous system correct answers the sensory and motor neurons that connect the
central nervous system to the rest of the body; cranial and spinal nerves
, afferent correct answers conveying toward a center; sensory information from the PNS to the
CNS
receptors correct answers detect changes and respond to stimuli
effectors correct answers respond to efferent signals
efferent correct answers conveying away from the center; motor commands from the CNS to the
PNS
somatic sensory correct answers carry signals from the muscles, bones, skin, joints
visceral sensory correct answers carry signals from organs
somatic motor correct answers carries signals to skeletal muscles
autonomous nervous correct answers carry signals to smooth, cardiac muscles and glands;
sympathetic and parasympathetic
astrocytes correct answers provide structural and metabolic support for neurons; form the blood
brain barrier and scar tissue; neuroglia of the CNS
microglia correct answers act as phagocytes, eating damaged cells and bacteria, act as the brains
immune system; clean up cellular debris
oligodendrocytes correct answers type of glial cell in the CNS that wrap axons in a myelin sheath
dendrites correct answers branchlike parts of a neuron that are specialized to receive information
axon hillock correct answers the conical region of a neuron's axon where it joins the cell body;
typically the region where nerve signals is generated.
myelin sheath correct answers a layer of fatty tissue segmentally encasing the fibers of many
neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from
one node to the next
nodes of ranvier correct answers gaps in the myelin sheath to which voltage-gated sodium
channels are confined
axon terminals correct answers branches at the end of the axon that contain tiny pouches, or sacs,
called synaptic vesicles
central nervous system correct answers made up of the brain an the spinal cord
sensory neuron correct answers neurons that carry incoming information from the sensory
receptors to the brain and spinal cord; afferent
interneuron correct answers central nervous system neurons that internally communicate and
intervene between the sensory inputs and motor outputs
motor neuron correct answers a neuron that sends an impulse to a muscle or gland, causing the
muscle or gland to react; efferent
peripheral nervous system correct answers the sensory and motor neurons that connect the
central nervous system to the rest of the body; cranial and spinal nerves
, afferent correct answers conveying toward a center; sensory information from the PNS to the
CNS
receptors correct answers detect changes and respond to stimuli
effectors correct answers respond to efferent signals
efferent correct answers conveying away from the center; motor commands from the CNS to the
PNS
somatic sensory correct answers carry signals from the muscles, bones, skin, joints
visceral sensory correct answers carry signals from organs
somatic motor correct answers carries signals to skeletal muscles
autonomous nervous correct answers carry signals to smooth, cardiac muscles and glands;
sympathetic and parasympathetic
astrocytes correct answers provide structural and metabolic support for neurons; form the blood
brain barrier and scar tissue; neuroglia of the CNS
microglia correct answers act as phagocytes, eating damaged cells and bacteria, act as the brains
immune system; clean up cellular debris
oligodendrocytes correct answers type of glial cell in the CNS that wrap axons in a myelin sheath
