A&P CHAPT 11

25問 • 2年前

問題一覧

In the peripheral nervous system, the myelin sheath is formed when ____________________ wrap themselves around the axon.

Schwann cells

The central nervous system includes the:

brain and spinal cord

A patient who is experiencing severe pain down the back of the leg most likely has an injury to a nerve in which plexus?

sacral

The blood-brain barrier primarily consists of which variety of neuroglial cell?

astrocyte

This lobe of the cerebrum is the primary location for analyzing and interpreting visual information.

occipital lobe

White matter appears white because of:

its abundance of myelin

Which statement about the medulla oblongata is true?

It aids in the regulation of breathing.

Nerves from which region of the spinal cord innervate the chest, head, neck, shoulders, arms, hands, and diaphragm?

cervical

Which statement about the gut-brain axis is most accurate?

The gut-brain axis involves bidirectional communication between the central and enteric nervous systems.

An individual experiencing a stimulation of the sympathetic nervous system could be expected to display which of the following responses? Select three correct choices. Selecting more than three choices will result in the deduction of points.

Increased blood flow to the skeletal muscles, Increased respiration, Stimulation of sweat glands

What are the consequences if a nerve lacks a neurilemma?

The nerve cannot regenerate if injured.

A somatic reflex:

involves a neural circuit that bypasses regions of the brain where conscious decisions are made.

When you touch something hot, these neurons send impulses the muscles, allowing you to withdraw your hand:

motor (efferent) neurons.

The cardiac, vasomotor, and respiratory centers are all located in the:

Medulla Oblongata

Which nerve stimulates the diaphragm for breathing?

phrenic

This lobe of the cerebrum regulates emotion, social judgement, and decision-making.

frontal lobe

Which portion of the brain contains the midbrain, pons, and medulla oblongata?

brainstem

This is the longest and most widely distributed cranial nerve. It enervates most of the organs in the thoracic and abdominal cavities as well as those in the head and neck?

CN X: Vagus Nerve

The division of the nervous system that carries signals from nerve endings to the central nervous system is the:

sensory (afferent) division.

A patient is admitted to the hospital with paralysis on the right side of the body. Magnetic resonance imaging reveals that he has suffered a stroke on the left side of his brain. What is the most likely explanation for the location of his symptoms?

A stroke on the left side of the brain would affect motor signals being sent to the right side of the body.

During the refractory period, when a neuron’s cell membrane is polarized and contains an abundance of sodium on the inside and an abundance of potassium on the outside, the cell is:

unable to react to a new stimulant

Neurons found in the CNS that connect incoming sensory pathways with outgoing motor pathways are called:

interneurons

Sometimes called the “emotional brain,” this area of the brain is the seat of emotion and learning:

límbic system

Nerve impulses pass from one neuron to another at a synapse through the use of a:

neurotransmitter

The outermost and toughest layer of the meninges, which surround and protect the brain and spinal cord, is called the:

dura mater

Anatomy test 1

Zoey · 89問 · 2年前

Anatomy test 1