Exam 12: The Spinal Cord, spinal Nerves, and Spinal Reflexes

Spinal nerves from the sacral region of the cord innervate the ________ muscles.

What purpose does reflex testing serve?

The tough,fibrous,outermost covering of the spinal cord is the

The face,head,and cheeks are located in a dermatome supplied by nerves from what spinal cord region?

Figure 12-2 -Identify the structure labeled "8."

Describe the gross anatomical features of a cross section of spinal cord.

A(n)________ reflex has at least one interneuron placed between the sensory and motor neurons.

The layer of connective tissue that surrounds individual axons within a peripheral nerve is termed the

Which kind of neural circuit processes information in a stepwise fashion,one neuron to another?

Define a nerve plexus trunk and cord.

Reflexes based on synapses formed during development are ________ reflexes.

Each peripheral nerve provides ________ innervation to peripheral structures.

The ________ nerve,which arises in the cervical plexus,innervates the diaphragm.

The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

If a person has a crush injury to the C3-C5 spinal segments,you would expect that he

Define stretch reflex.

A person with polio has lost the use of his leg muscles.In which area of his spinal cord would you expect the virus-infected motor neurons to be?

Describe a dermatome.

As the ________ nerve approaches the knee,it divides into two branches,the fibular nerve and the tibial nerve.

The flexor reflex