Name the membranous encasement surrounding the brain. Epineurium Choroid plexus Lamina propria Meninges

Meninges The meninges encase the central nervous system.

Which of the following regions cannot be observed superficially? Longitudinal fissure Cerebrum Cerebellum Diencephalon

Diencephalon The diencephalon forms the central core of the brain and cannot be seen from the surface of the brain

Which region of the brain contains gyri and sulci? Cerebrum Brain stem Cerebellum Diencephalon

Cerebrum The cerebral cortex has a convoluted surface. The ridges are known as gyri and the grooves that separate the gyri are sulci.

Which of the following landmarks separate the cerebrum from the cerebellum? Central sulcus Corpus callosum Transverse fissure Longitudinal fissure

Transverse fissure The transverse fissure is the separation found between the cerebrum and the cerebellum.

Which of the following landmarks divides the cerebrum in half? Transverse fissure Vermis Lateral sulcus Longitudinal fissure

Longitudinal fissure The longitudinal fissure is easily observed right along midline dividing the cerebrum into the right and left cerebral hemispheres.

The meninges consist of ___ layers.

3- The dura mater, arachnoid, and pia mater

Which of the following is the outer layer of the meninges? Dural sinus Dura mater Arachnoid Pia mater

Dura mater The outer layer of the meninges is the dura mater. The dura mater is easily seen surrounding the outside of the brain.

Curare causes paralysis by blocking: receptors on the postsynaptic cell the action potential directly in the postsynaptic cell the release of neurotransmitter from the presynaptic cell the action potential in the nerve that serves a muscle

receptors on the postsynaptic cell

An action potential results from changes in the permeability of the neuron______. membrane to K+ alone to K+ followed by a change in the permeability to Na+ to Na+ followed by a change in the permeability to K+ membrane to Na+ alone

to Na+ followed by a change in the permeability to K+

Where does ether exert its effects on nerve activity? at the axon terminals of anesthetized fibers only where it is in contact with the nerve fiber along the whole nerve when a segment of the nerve is anesthetized

only where it is in contact with the nerve fiber

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lab exam 4 (bio 227)

Question	Answer
Name the membranous encasement surrounding the brain. Epineurium Choroid plexus Lamina propria Meninges	Meninges The meninges encase the central nervous system.
Which of the following regions cannot be observed superficially? Longitudinal fissure Cerebrum Cerebellum Diencephalon	Diencephalon The diencephalon forms the central core of the brain and cannot be seen from the surface of the brain
Which region of the brain contains gyri and sulci? Cerebrum Brain stem Cerebellum Diencephalon	Cerebrum The cerebral cortex has a convoluted surface. The ridges are known as gyri and the grooves that separate the gyri are sulci.
Which of the following landmarks separate the cerebrum from the cerebellum? Central sulcus Corpus callosum Transverse fissure Longitudinal fissure	Transverse fissure The transverse fissure is the separation found between the cerebrum and the cerebellum.
Which of the following landmarks divides the cerebrum in half? Transverse fissure Vermis Lateral sulcus Longitudinal fissure	Longitudinal fissure The longitudinal fissure is easily observed right along midline dividing the cerebrum into the right and left cerebral hemispheres.
The meninges consist of ___ layers.	3- The dura mater, arachnoid, and pia mater
Which of the following is the outer layer of the meninges? Dural sinus Dura mater Arachnoid Pia mater	Dura mater The outer layer of the meninges is the dura mater. The dura mater is easily seen surrounding the outside of the brain.
The falx cerebri and tentorium cerebelli are formed by this connective tissue membrane. pia mater dura mater arachnoid	dura mater
Curare causes paralysis by blocking: receptors on the postsynaptic cell the action potential directly in the postsynaptic cell the release of neurotransmitter from the presynaptic cell the action potential in the nerve that serves a muscle	receptors on the postsynaptic cell
An action potential results from changes in the permeability of the neuron______. membrane to K+ alone to K+ followed by a change in the permeability to Na+ to Na+ followed by a change in the permeability to K+ membrane to Na+ alone	to Na+ followed by a change in the permeability to K+
Where does ether exert its effects on nerve activity? at the axon terminals of anesthetized fibers only where it is in contact with the nerve fiber along the whole nerve when a segment of the nerve is anesthetized	only where it is in contact with the nerve fiber
You are examining a neuron under the microscope. It appears as a round cell without visible processes. What is true of this neuron? It's likely to be a unipolar neuron It's located in the PNS It's most likely a sensory neuron It's likely to be a un

Created by: kaleaconrad

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