Spinal Cord and Spinal Nerves

The most superficial of the meninges is the

• Arachnoid mater
• Pia mater
• Dura mater.
• Cortex

Sensory neurons entering the spinal cord 

• enter through the dorsal horn.
• have their cell bodies in the dorsal root ganglia
• travel through a spinal nerve.
• all of the above

Given these components of a reflex: 
1. association neuron
2. skeletal muscle
3. afferent neuron
4. efferent neuron
5. sensory receptor

Choose the sequence below that best represents the order followed in a reflex, from stimulus to response.

• 5, 4, 3, 2, 1 
• 5, 3, 2, 4, 1
• 5, 4, 3, 1, 2
• 5, 3, 1, 4, 2

Damage to the ventral root of a spinal nerve results in

• loss of motor control. 
• loss of parasympathetic function
• loss of sensory input.
• both A and B

The somatic system contains nerves that control _________.

• skeletal muscles
• internal organs, joints, and glands
• skeletal muscles, skin, and glands
• smooth muscles, cardiac muscles and glands

The PNS nerves are part of either the somatic system or the ________ . 

•  motor system
• sympathetic system
• parasympathetic system
• autonomic system

The peripheral nervous system includes mixed nerves that _________. 

• serve the muscular and skeletal system
• serve the sympathetic system
• serve the parasympathetic system
• contain both sensory and motor fibers

Which of the following spinal cord ascending tracts conveys sensory information about which we become consciously aware?

• Dorsal column
• Ventral column
• Dorsal horn
• Central Canal

Place in order from top to bottom vertebrae:
A. coccygeal
B. thoracic
C. lumbar

• B C A
• A B C
• B A C
• A C B

Which letter represents the Cervical Region of the spinal cord and vertebral column?

• A
• B
• C
• D