Quiz 13 :
The Peripheral Nervous System

Which division detects stimuli of the general senses and special senses?

You feel a mosquito land on your arm. This stimulus is carried to the central nervous system (CNS) by the:

The sympathetic nervous system and parasympathetic nervous system are divisions of the:

Which division of the peripheral nervous system (PNS) detects stimuli and carries them to the central nervous system (CNS)?

What is the outermost connective tissue covering of a nerve?

Mixed nerves house:

Which of the following houses motor neurons?

What connective tissue sheath wraps the axon of a neuron?

Bundles of axons within a nerve are known as:

Where is the motor response initiated?

What is cranial nerve VIII?

The vagus nerve is represented by Roman numeral:

Which cranial nerve is generally thought of as a mixed nerve?

Which cranial nerve is NOT involved in eye movement?

The cranial nerves that have neural connections with the tongue include all of the following EXCEPT:

Which cranial nerve detects smell?

An inability to swallow indicates a problem with the:

Ms. Parker has damage to the sensory root of the facial nerve (VII). Which of the following symptoms matches this information?

Loss of balance and equilibrium can indicate damage to the:

Where does the motor portion of the facial nerve (VIII) originate?

What controls the movement of rectus abdominis, a skeletal muscle on the anterior surface of the body?

Which of the following is INCORRECT about the numbers of spinal nerves?

Which of the following carries sensory information only?

The anterior root and posterior root fuse to form a(n):

A network of nerves is known as a:

During a boxing match, Sammy was hit on the side of the neck. He stopped breathing temporarily due to damage to the:

Which plexus provides motor and sensory innervation to the upper limb?

The phrenic nerve is a member of the:

Which of the following does NOT belong to the brachial plexus?

Striking the "funny" bone is actually stimulation (or injury) to the:

What do most of the anterior rami of the thoracic spinal nerves serve?

The longest and largest nerve in the body belongs to the sacral plexus and is known as the:

Olfactory receptors depolarize in response to an odorant, turning a stimulus into an electrical signal. This conversion is known as:

Sensory transduction occurs in:

Sensory receptors that adapt to stimuli after a certain period of time are:

The stretch of a full urinary bladder is detected by a(n):

Potentially damaging stimuli that result in pain are selectively detected by:

Photoreceptors are found only in the:

Your wrap your hands around a warm cup of hot chocolate. This sensation is detected by a:

Which mechanoreceptor detects deep pressure?

Mechanoreceptors might detect which of the following sensations?

The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in:

A region of skin has a great number of sensory neurons, and each neuron has a relatively small receptive field. The two ^-point discrimination threshold for this skin region might be:

A test known as two ^-point discrimination threshold measures:

Regions of skin supplied by a spinal nerve for somatic sensation are known as:

Ms. Carroll went to her doctor's office with pain in her right shoulder blade and learned she was having a gallbladder attack. You're not surprised to hear about the unusual location of her pain since it is known as:

Visceral pain may be perceived as cutaneous pain, a phenomenon known as:

What part of the nervous system integrates and interprets information from PNS sensory neurons?

What connects the upper motor neurons to lower motor neurons?

What type of neuron contacts a muscle fiber and initiates a muscle contraction?

What type of motor neuron stimulates skeletal muscle fibers to contract by the excitation ^-contraction mechanism?

Motor neurons pools consist of:

Place the following steps in order for motor control. 1. Upper motor neurons stimulate lower motor neurons.

Which of the following does NOT characterize a reflex?

Which of the following must occur first in a reflex arc?

What type of sensory receptors are muscle spindles and Golgi tendon organs?

What is NOT true of muscle spindles?

A reflex with a single synapse between the sensory and motor neurons within the spinal cord is known as a:

Determine the polysynaptic reflex from this list of examples.

What reflex causes muscle relaxation?

The inability to produce a gag reflex could indicate a problem with the:

Which of the following complements the flexion (withdrawal) reflex?

In the crossed ^-extension reflex, if the right leg flexes, then the left leg:

What cranial nerves are involved in the sensory and the motor roles for the corneal blink reflex?

The somatic sensory division of the peripheral nervous system (PNS) carries stimuli from both general and special senses to the central nervous system (CNS).

Cranial nerves and spinal nerves are the two types of nerves found in the peripheral nervous system (PNS).

The visceral motor division (autonomic nervous system) controls the body's voluntary motor functions.

Twelve pairs of cranial nerves transmit information to and from the brain.

The first pair of cranial nerves is the optic nerve (I).

The hypoglossal nerve (XII) and glossopharyngeal nerve (IX) are both involved in taste sensation.

The posterior (dorsal) root of a spinal nerve and the posterior ramus are considered mixed nerves since they both carry sensory and motor information.

The lumbar nerve plexuses arise from the anterior rami of L₁ ^- L₄ and innervate structures of the pelvis and lower limb.

Proprioceptors are located in the musculoskeletal system where they detect the movement and position of a joint or body part.

Interoceptors detect stimuli from the inside of the body, such as blood pressure, stretch of a full urinary bladder, and the body's temperature.

Receptive field maps show the regions of skin and the spinal nerve that supplies somatic sensation to them.

Motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the CNS.

Upper motor neurons directly contact and stimulate skeletal muscle fibers to contract.

Reflexes are programmed, automatic, and rapid responses to stimuli.

The simple stretch reflex employs mechanoreceptors known as Golgi tendon organs to detect the degree of stretch experienced by a muscle.

Match the following using the image of the plexuses. -Cervical plexus

Match the following using the image of the plexuses. -Lumbar plexus

Match the following using the image of the plexuses. -Sacral plexus

Match the following using the image of the plexuses. -Brachial plexus

Match the following using the image of the plexuses. -Nerve plexus that includes the phrenic nerve

Match the following using the image of the plexuses. -Nerve plexus that includes the sciatic nerve

Match the following using the image of the cranial nerves. -Olfactory bulb (synapses with Cranial nerve I)

Match the following using the image of the cranial nerves. -Abducens nerve

Match the following using the image of the cranial nerves. -Oculomotor nerve

Match the following using the image of the cranial nerves. -Cranial nerve IV

Match the following using the image of the cranial nerves. -Cranial nerve XII

Discuss the functions of the two main divisions of the peripheral nervous system (PNS).

List and describe the connective tissue sheaths that make up a nerve.

List the 12 pairs of cranial nerves, in numerical order, with their corresponding Roman numerals.

List the cranial nerves and their corresponding Roman numerals that are generally considered sensory nerves.

Identify and name the cranial nerves responsible for eye movement. Indicate the function of each cranial nerve identified.

Explain the difference between a ramus and a plexus.

Describe the structure of a nerve plexus and explain the advantage of this structure to its function.

List the five major nerves of the brachial plexuses.

Discuss the spinal nerves that contribute to the sacral plexuses and the body region(s) served.

Describe the steps of sensory transduction when a touch receptor in the skin is activated.

Define adaptation as it relates to sensory function. What types of mechanoreceptors adapt?

Explain how hair follicle receptors complement the function of tactile corpuscles and Merkel cell fibers.

How does the two ^-point discrimination threshold demonstrate the size of receptor fields in the skin?

Generalize the role of the lower motor neuron in motor control.

Outline the three ^-step sequence of a reflex arc.

Explain the difference between a monosynaptic reflex and a polysynaptic reflex.

Outline the steps to a simple stretch reflex.

Which of the following would be most devastating to damage: motor nerve, sensory nerve, or mixed nerve? Explain.

People suspected of having a stroke can be asked to stick their tongues straight out. A slanted or somewhat bent tongue may be just one indicator of stroke. Determine the cranial nerve affected if the tongue is bent or slanted and identify the nerve as sensory, motor, or mixed. Describe the function of this nerve.

Dan injured the spinal nerves emerging from the lower lumbar and sacral region of the spinal cord during a horse ^-riding accident. After his injury, he reported numbness in his feet. Explain the connection between the loss of sensation he has described and the plexus responsible for serving this area.

Which nerve of the brachial plexus becomes inflamed, resulting in carpal tunnel syndrome? Explain what regions are served by this inflamed nerve.

A patient sustained an injury to the lower motor neurons when a board fell on his back at a construction site. The upper motor neurons are intact and undamaged. Determine the effect, if any, on motor control.

Predict the impact on the gag reflex when a person has a damaged vagus nerve.