Current (A3) A&P Lab 1- Exam 4

What are clusters of neuronal cell bodies in the peripheral nervous system called?

ganglia

What is the functional classification for neurons that carry information from the central nervous system to peripheral effector organs?

motor

What type of glial cell is responsible for acting as phagocytic cells in the central nervous system?

microglia

Identify the type of glial cell shown

astrocyte

Identify the indicated part of a neuron

axon

Identify the indicated part of a synapse

postsynaptic membrane

Identify the indicated part of a nerve

myelin sheath

Identify the indicated connective layer of a nerve

epineurium

Which labeled portion of the diagram corresponds to the resting potential of the axon?

A

What do we call the period during which initiation of an action potential requires a higher than normal threshold stimulus?

relative refractory period

Hyperpolarization is the result of the excessive exit of which ion from the cell?

potassium

In the PhysioEx exercise, what was the effect of lidocaine on the nerve?

inhibition

Identify the indicated lobe of the brain

temporal lobe

Identify the indicated structure of the brain

fornix

Identify the indicated groove of the brain

central sulcus

Identify the indicated groove of the brain

lateral sulcus

Identify the indicated groove of the cerebellum

horizontal fissure

Identify the indicated groove of the cerebellum

primary fissure

Identify the indicated cranial nerve

trochlear

Identify the indicated structure

optic tract

Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?

both

Is the indicated structure composed of sensory neurons, motor neurons, or both?

sensory

Identify the indicated space

fourth ventricle

Identify the indicated structure

tentorium cerebelli

Identify the indicated part of the coverings of the brain

periosteal dura mater

Identify the indicated structure (be specific)

gray commissure

Identify the indicated structure

cervical enlargement

Identify the indicated structures

lumbar spinal nerves

Identify the indicated opening

palpebral fissure

Identify the indicated structure

ora serrata retinae

Identify the indicated structure

retina

Identify the indicated structure

nasolacrimal duct

Identify the indicated structure

medial canthus

Identify the indicated structure

lateral rectus muscle

Identify the indicated structure

medial rectus muscle

Identify the indicated layer of the retina

ganglion cell layer

Identify the indicated structure

malleus

Identify the indicated structure

tympanic membrane

Identify the indicated region of the ear

inner ear

Identify the indicated structures

semicircular canals

Identify the indicated region

vestibule

What phenomenon do the indicated structures sense?

dynamic equilibrium

Identify the indicated structures

hair cells

Identify the indicated space

scala tympani

What fluid fills the scala tympani?

perilymph

The inability of the eye to focus well on close objects as a result of abnormal shape of the eyeball is called:

hyperopia

Which cranial nerve supplies the inferior oblique muscle of the eye?

oculomotor

Which of the three tunics (layers) does the iris belong to?

vascular

To which portion of the ear (outer, middle, inner) does the vestibule belong?

inner

With which sense (hearing, static equilibrium, dynamic equilibrium) is the saccule associated?

static

Identify the indicated region of the sarcomere

thick filaments

What is the functional classification for neurons that carry information from peripheral receptors to the central nervous system?

sensory

Identify the type of glial cell shown

schwann cell

Identify the indicated part of a neuron

axon terminals

Which labeled portion of the diagram corresponds to the hyperpolarization of the axon?

D

Which labeled portion of the diagram corresponds to the depolarization of the axon?

B

Which labeled portion of the diagram corresponds to the repolarization of the axon?

C

What is the smallest stimulus that is capable of initiating an action potential called?

threshold

Depolarization is the result of the rapid entry of which ion into the cell?

sodium

In the PhysioEx exercise, what was the effect of ether on the nerve?

inhibition

Identify the indicated space of the brain

third ventricle

Identify the indicated ridge of the brain

postcentral gyrus

Identify the indicated lobe of the cerebellum

vermis

Identify the indicated structure

olfactory bulb

Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?

both

Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?

sensory

Identify the indicated portion of this space

anterior horn of lateral ventricle

Identify the indicated structure

crista galli

Identify the indicated structure

falx cerebri

Identify the indicated structure (be specific)

anterior horn

Identify the indicated structure

cauda equina

Identify the indicated space

conjunctial sac

Identify the indicated structure

ciliary body

Identify the indicated structure

optic nerve

Identify the indicated structure

caruncle

Identify the indicated structure

inferior rectus muscle

Identify the indicated layer of the retina

photoreceptor cell layer

Identify the indicated space

auditory tube

Identify the indicated structure

stapes

Identify the indicated region of the ear

outer ear

Identify the indicated structure

utricle

Identify the indicated structure

saccule

Identify the indicated space

scala media

What fluid fills the scala vestibuli?

perilymph

Normal vision is called:

emmetropia

Which cranial nerve supplies the medial rectus muscle of the eye?

occulomotor

Which of the three tunics (layers) does the retina belong to?

inner

To which portion of the ear (outer, middle, inner) does the semicircular canal belong?

inner

With which sense (hearing, static equilibrium, dynamic equilibrium) is the semicircular canal associated?

dynamic

Identify the indicated structure of the integument

meissner's corpuscle

What do we call neuronal processes that carry receptors for neurotransmitters and that transmit membrane potentials toward the neuronal cell body?

dendrites

What do we call neuronal processes that transmit membrane potentials away from the neuronal cell body?

axon

Identify the type of glial cell shown

microglia

Identify the indicated part of a synapse

presynaptic membrane

Identify the indicated part of a nerve

axon

Identify the indicated part of a nerve

fascicle

What do we call the period during which an action potential cannot be initiated, regardless of the strength of the stimulus?

absolute refractory period

In the PhysioEx exercise, what was the effect of curare on the nerve?

inhibition

Identify the indicated structure of the brain

choroid plexus of the third ventricle

Identify the indicated structure of the brain

thalamus