Exams 1-3 Flashcards
The nucleus basalis is a key part of the brain’s system for:
attention
What is the name given to a cluster of neurons outside the CNS?
Ganglion
The division of the nervous system consisting of neurons that bring messages from the senses to the central nervous system.
Somatic
What kinds of activities are produced from activation of the parasympathetic nervous system?
calmness and relaxation
The postcentral gyrus in the parietal lobe is the primary area for which type of sensation?
touch
The ascending portion of the reticular formation
increases arousal and attention
Reflexive changes in heart rate and breathing when you are exercising, for example, are regulated by the ___?
Medulla
The descending portio of the reticular formation is one of several brain areas that control the:
motor areas of the spinal cord
Functionally, cranial nerves carry which kind of information?
motor and sensory
What are the two parts of the central nervous system?
brain and spinal cord
Which plane shows brain structures as they would be seen from the front?
Coronal
If the ipsilateral dorsal and ventral roots were cut, what would happen?
Sensation and motor control would be lost on one side.
Which neurotransmitter is used by the parasympathetic nervous system?
Acetylcholine
According to the Bell-Magendie law
ventral roots carry motor information while dorsal roots carry sensory information
Besides problems with balance and coordination, a person with damage to the cerebellum would also likely have problems with
shifting attention between auditory and visual stimuli
The cerebellum contributes to the control of what function?
Movement
The term pons is named as such because
axons within the pons cross over from one side to the other
The spinal cord communicates with
sense organs and muscles below the level of the head
How many pairs of cranial nerves do humans have?
12
What, generally, is the relationship between the activity of the sympathetic and the parasympathetic nervous systems?
They usually have opposite effects on the same organ.
Meningitis is an inflammation of the
membranes surrounding the brain.
Which of the following means “toward the back?”
Dorsal
The limbic system is important for
emotional behaviors
If a cell in a given column responds to touch on the person’s right toe, then another cell in the same column would respond to
touch on the right toe
Which part of the nervous system prepares the body for “fight or flight” activities?
Sympathetic
You are walking after dark. A sudden noise frightens you. Your heart pounds, your pulse races, and your breathing rate increases. These responses are due to your:
sympathetic nervous system
What structure is composed of the medulla, pons, the midbrain, and certain central structures of the forebrain?
Brain stem
The raphe system
increases the brain’s readiness to respond to stimuli.
If one structure is on the left side of the body and another is on the right, they are said to be ___ to each other.
contraleteral
What is the name given to a cluster of neurons inside the CNS?
Nucleus
Which division of the nervous system consists of neurons that control the heart, intestines, and other organs?
Autonomic
Damage to the thalamus would most likely result in
loss of sensory input to the cortex
In the spinal cord, white matter is comprised mostly of ___, while gray matter is mostly ___.
myelinated axons, cell bodies
By both neutral and hormonal pathways, the hypothalamus regulates the activity of the
pituitary gland
Each hemisphere of the crebral cortex receives most of its input from the ___ side of the body and controls the muscles on the ___ side.
contralateral; contralateral
What is unique about the autonomic activity of the sweat glands?
They receive only sympathetic input.
The autonomic nervous system
receives and sends information to the heart, intestines, and other organs.
Which neurotransmitter is most often used by postganglionic neurons in the sympathetic nervous system?
Norepinephrine
Superior colliculus is to ___ as inferior colliculus is to ___
vision; hearing
Damage to the basal ganglia would most likely cause problems with
movement
The lateral geniculate nucleus is part of
thalamus
What color is perceived when all types of cones are simultaneously and equally active?
White
Stimulating a receptor leads to either excitation or inhibition of a particular neuron; the receptor is part of that neuron’s:
receptive field
Because blood vessels and ganglion cell axons are almost absent near the ____, it has nearly unimpeded vision
fovea
Where does the optic nerve send most of its information?
to the lateral geniculate
In the case of blindsight, losing conscious visual perception would most likely be associated with
loss of visual imagination
Light is focused as it enters through which of the following structures
lens and cornea
Axons from the lateral geniculate extend to which area of the cerebral cortex
occipital lobe