Nerves and ganglia that transmit action potentials to smooth muscle, cardiac muscle, and glands for digestion are part of the
|C)||autonomic nervous system.|
|E)||all of these|
A long cell process extending from the neuron cell body is the
Most efferent neurons and most CNS neurons are
Neuroglia that line fluid-filled cavities and produce and circulate cerebrospinal fluid are
In the PNS, bundles of axons and their connective tissue sheaths are called
|E)||nodes of Ranvier.|
Which of these statements is true concerning local potentials?
|A)||Local potentials must reach the threshold to cause an action potential.|
|B)||Local potentials travel throughout the whole nerve cell.|
|C)||A local potential occurs when potassium ion channels open and allow potassium ions to move into the cell.|
|D)||Local potentials move by saltatory conduction.|
|E)||Large negative molecules diffuse out of a cell during a local potential.|
Which of these is NOT a neurotransmitter?
Given these parts of a reflex arc: 1. afferent (sensory) neuron 2. efferent (motor) neuron 3. effector organ 4. association neuron 5. sensory receptor, Arrange the parts in the order an action potential would travel after a stimulus is received.
Nuclei that control functions such as heart rate regulation, breathing, swallowing, vomiting, coughing, sneezing, balance, and coordination are found in the
The part of the brain that plays a central role in control of body temperature, hunger, thirst, and emotions, and connects to the pituitary gland is the
|A)||is mainly concerned with speech.|
|B)||is the location for short-term memory.|
|C)||functions as a comparator between intended and actual movements.|
|D)||is primarily sensory in function.|
|E)||all of these|
Almost all ascending pathways relaying information to the cerebrum terminate in the
Cerebrospinal fluid is produced by the ______ and passes into the blood through the ______.
|A)||cerebral aqueduct, arachnoid granulations|
|B)||choroid plexus, cerebral aqueduct|
|C)||arachnoid granulations, choroid plexus|
|D)||choroid plexus, central canal|
|E)||choroid plexus, arachnoid granulations|
Which nerve plexus gives rise to the musculocutaneous, axillary, ulnar, radial, and median nerves?
The sympathetic division of the autonomic nervous system
|A)||has preganglionic cell bodies in the cranial and sacral regions.|
|B)||stimulates vegetative activities.|
|C)||has postganglionic cell bodies in terminal ganglia on or near the target organ.|
|D)||secretes norepinephrine from most postganglionic neurons.|
|E)||has many fibers in cranial nerve X.|
Which of the following is NOT a function of the nervous system?
|C)||Control of muscles and glands|
|E)||All of these are functions of the nervous system.|
The myelin sheaths around axons in the PNS are formed by
If an individual is in a coma they have more than likely suffered some damage to cells of the _________, which has the responsibility of maintaining consciousness and regulating sleep-wake cycles.