CNS nerve fibers lack the intrinsic capacity to regenerate, while PNS nerve fibers are able to regenerate. ( true or false)
A joint and the muscle that moves that joint tend to be innervated by different nerves ( true or false)
Which of the following is not used to classify sensory receptors?
The number of dendritic endings present
A fall or improper administration of an injection to the buttocks may injure a nerve of this plexus
Consists of an ipsilateral withdrawal reflex
and a contralateral extensor reflex; important
in maintaining balance
Tests both upper and lower motor pathways. The sole of the foot is stimulated with a dull instrument
Produces muscle relaxation and lengthening in response to tension; the contracting muscle
relaxes as its antagonist is activated.
Which of the following is the correct simple spinal reflex arc?
receptor, afferent neuron, integration center, efferent neuron, effector
Select the statement that is most correct.
Ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons.
In a crossed-extensor reflex, if the right arm was grabbed it would flex and the left arm would ________.
A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged?
If the ventral root of a spinal nerve were cut, what would be the result in the tissue or region that nerve supplies?
a complete loss of voluntary movement
Which of the following is not a main level of neural integration in the somatosensory system?
A reflex that causes muscle relaxation and lengthening in response to muscle tension is called a ________.
Golgi tendon reflex
Oculomotor nerves are responsible for which of the following functions
Focusing the eyes on close objects
Which of the following target organs/systems is affected by the sympathetic nervous system, but not affected by the parasympathetic nervous system?
Conduction through the autonomic efferent chain is faster than conduction in the somatic motor system. (true or false)
Which of the following is responsible for the overall integration of the autonomic nervous system?
Which of the following is a way in which the somatic and autonomic nervous systems are similar?
Both systems have motor fibers.
Which of the following does not receive branch fibers of the vagus nerves?
Inferior hypogastric plexus
Which types of drugs are used to help relieve depression?
Drugs that prolong the activity of norepinephrine on the postsynaptic membrane help to relieve depression.
Which of the following best demonstrates an example of cooperation of the parasympathetic and sympathetic nervous systems?
Parasympathetic stimulation causes vasodilation of blood vessels in the penis, leading to erection; sympathetic stimulation then causes ejaculation.
The two types of receptors that bind acetylcholine are _______ and _______ receptors.
Why might an individual experience the phenomenon known as "referred pain"?
Visceral pain afferents travel along the same pathways as somatic pain fibers.
The sympathetic nervous system is often referred to as the "resting and digesting" system. (true or false)
For which of the following activities is the parasympathetic nervous system generally responsible?
Resting and digesting
Which of the following does not describe the ANS?
a system of motor neurons that innervates all muscle cells
Cardiovascular effects of the sympathetic division include all except ________.
dilation of the blood vessels serving the skin and digestive viscera
Control of temperature, endocrine activity, and thirst are functions associated with the ________.
A drug that might be used specifically to reduce heart rate in cardiac patients could be ________.
The secretions of the adrenal medulla act to supplement the effects of ________.
Sympathetic responses generally are widespread because ________.
NE and epinephrine are secreted into the blood as part of the sympathetic response
Preparing the body for the "fight-or-flight" response is the role of the ________.
sympathetic nervous system
Fibers that enter and leave the sympathetic chain without synapsing form structures called ________.
The "resting and digesting" division of the autonomic nervous system is the ________.
Which of these effectors is not directly controlled by the autonomic nervous system?
Sympathetic division stimulation causes ________.
increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure