Human Anatomy Weekly Quiz 8

Spinal Cord, Spinal Nerves, Autonomic Nervous System

What dense irregular connective tissue fiber connects the inferior tip of the spinal cord to the coccyx?

filum terminale

What is the name of the continuation of the pia mater at the inferior end of the spinal cord?

filum terminale

What true space is found in the spinal cord meninges that is not found in the brain meninges?

epidural space

What nerve innervates all of the muscles in the posterior compartment of the leg?

tibial nerve

What nerve innervates the muscles of the anterior compartment of the leg?

deep fibular nerve

What nerve innervates the biceps femoris, short head?

common fibular nerve

What nerve innervates pronator teres?

median nerve

What autonomic nervous system axons are nonmyelinated?

postganglionic axons

What is the receptor type for the majority of the neurotransmitters released from the postganglionic axons in the sympathetic nervous system?

adrenergic receptor

What do we call the postganglionic axon of the sympathetic nervous system as it leaves the ganglia to join the spinal nerve (other than the postganglionic axon)?

gray rami

What extensions of pia mater anchor the spinal cord laterally in the vertebral foramina?

denticulate ligaments

What nerve innervates the muscles of the anterior compartment of the thigh?

femoral nerve

What nerve innervates fibularis brevis?

superficial fibular nerve

What nerve innervates the iliacus muscle?

femoral nerve

What do we call the situation where a smooth muscle or cardiac muscle fiber or a gland is innervated by the parasympathetic and sympathetic nervous systems?

dual innervation

What is the receptor type for the neurotransmitter released from the preganglionic axons?

nicotinic receptors

What nerve type is found only in the gray matter of the central nervous system?

interneuron

What nerve innervates the muscles in the lateral compartment of the leg?

superficial fibular nerve

What muscle does the radial nerve innervate that is not in the posterior compartment of the brachium or antebrachium?

brachioradialis

What is the name of the collection of ganglia where the majority of the preganglionic sympathetic autonomic axons synapse?

sympathetic trunk ganglia

The preganglionic soma of what branch of the autonomic nervous system are found in the brain and sacrum?

parasympathetic nervous system

What type of neuron leaves the anterior horn of the spinal cord?

motor neuron

What is the longitudinal depression of the spinal cord that is just anterior to the spinal processes of the vertebrae?

posterior median sulcus

What nerve innervates extensor hallucis longus?

deep fibular nerve

What type of nervous system is the autonomic nervous system?

motor nervous system

What neurotransmitter is released from the majority of the postganglionic axons of the sympathetic nervous system?

norepinephrine

Where is the soma for the sensory portion of a spinal nerve located?

posterior root ganglia

What mid-line structure of the spinal cord is posterior to the body of the vertebrae?

anterior median fissure

What division of the autonomic nervous system is concerned with homeostasis?

parasympathetic division

What structure does the central canal pass through as it travels in the spinal cord?

gray commissure

What nerve innervates all of the muscles or part of a muscle, except one, in the posterior compartment of the thigh?

tibial nerve

What division of the autonomic nervous system increases alertness and metabolic activity?

sympathetic division

What nerve innervates triceps brachii/lateral head, supinator, and extensor digitorum?

radial nerve