Online Assessment
Compared to the number of cortical lobes of the brain, the number of ventricles of the brain is:
1
As parasympathetic activity increases in a cranial nerve innervating the eye, pupil diameter will:
2
Compared to conduction velocity in a myelinated neuron, conduction velocity in a small unmyelinated neuron is:
2
Compared to the number of brain cells at birth, the number of brain cells as you age will:
2
Compared to the number of synapses in the withdrawal reflex, the number of synapses in the knee-jerk reflex is:
2
Compared to the number of cranial nerves, the number of spinal nerves is:
3
Compared to the number of sensory cranial nerves, the number of motor cranial nerves is:
3
Arrange the following from the MOST SUPERFICIAL to the DEEPEST. 1. Pia mater 2. Subarachnoid space 3. Dura mater 4. Arachnoid mater
3, 4, 2, 1
The enzyme responsible for terminating the effects of the neurotransmitter released by somatic motor neurons is:
Acetylcholinesterase
Which of the following is a function of nervous tissue?
Allow charged ions to create electrical events that travel along the entire neuron
Which of the following is NOT found in the brainstem?
Arbor vitae
Smell
I. Olfactory nerves
Vision
II. Optic nerves
Parasympathetic constricts pupil
III. Occulomotor nerves
Motor to superior oblique
IV. Trochlear nerves
Parasympathetic to salivary glands
IX. Glossopharyngeal nerves
Cerebrospinal fluid
Is produced by the choroid plexus
Inferior colliculi are located in the:
Midbrain and are involved in the startle response
The medulla oblongata
None of the above
Which of the following are NOT part of the peripheral nervous system?
Nuclei
Which of the following cranial nerves does NOT control any of the extraocular muscles?
Optic nerves
Suppose a drug had the effect of inducing sleep. Which of the following brain areas would the drug most likely affect?
Reticular formation
The repolarization phase of a nerve impulse or action potential is caused by a
Rush of K+ out of the neuron
Chewing
V. Trigeminal nerves
Motor to lateral rectus
VI. Abducens nerves
Bell's or Facial Palsy
VII. Facial nerves
Balance and hearing
VIII. Auditory/Vestibular nerves
Innervates the heart
X. Vagus Nerves
Trapezius (upper back)
XI. Accessory nerves
Intrinsic tongue muscles
XII. Hypoglossal nerves
primary motor cortex
controls voluntary skeletal muscle movements
All cranial nerves originate from the brainstem.
false
Bumps or folds on the brain are referred to as sulci.
false
Narcolepsy occurs frequently in students taking classes at PSU, especially in Anatomy and physiology and is directly related to the topic and time the class is offered.
false
The brain typically contains between 1and 2 billion cells and weighs 10 pounds.
false
The cerebrum consists of an outer cortex that is several millimeters thick and consists of white matter.
false
The diencephalon contains the 4th ventricle.
false
The frontal lobe of the brain is important in the control voluntary motor function, aggression, mood, and olfactory reception.
false
The knee-jerk reflex causes the hamstring group to contract.
false
The pons is superior to the midbrain and inferior to the medulla oblongata.
false
The somatic nervous system is always excitatory while the autonomic nervous system is always inhibitory
false
The substantia nigra is located in the pons.
false
The withdrawal reflex causes the quadriceps femoris group to contract.
false
They reflex arc contains 5 basic components including: sensory receptor, sensory neuron, interneurons, motor neuron, and a receptor modulator.
false
An action potential occurs
if the membrane potential reaches a threshold value.
Broca's area
initiates the muscle movements for speech
visual cortex
interprets basic visual information such as shape and color
primary auditory area
interprets basics of sound such as pitch and volume
auditory association area
interprets meaning of sound by placing it in context with past experiences
somatosensory association area
interprets sensory info & puts it in context with past experiences
gustatory area
interprets taste senses
Wernicke's area
involved with comprehension of speech
The knee-jerk reflex is
monosynaptic and can be used to determine if the higher CNS centers that normally influence this reflex are functional
primary somatosensory area
receives and localizes general sensations from entire body
visual association area
recognizes meaning of visual info by putting it in context with past experiences
prefrontal area
site of motivation and foresight; regulates mood and emotion
In a resting neuron
the sodium-potassium pumps help maintain the low concentration of Na+ inside the cell
Acetylcholine is a neurotransmitter used at some point in both autonomic and somatic reflexes
true
Compared to a cervical spinal nerve, a greater portion of a sacral spinal nerve will be found within the vertebral column.
true
Crainial nerve X is mixed.
true
Parkinson's disease is associated with loss of dopaminergic neurons.
true
The 2 thickest portions of the spinal cord are the lumbar or lumbosacral and cervical enlargements.
true
The 3rd ventricle is connected to the 4th ventricle by the cerebral aqueduct or Aqueduct of Sylvius.
true
The medulla oblongata contains discret nuclei specific for regulation of heart rate, blood vessel diameter, and breathing.
true
premotor area
works out/organizes sequences of signals needed for complex motion