Spinal Cord
The nerves to and from the lower limbs arise from the:
lumbar enlargement
The connective tissue covering that surrounds the brain and spinal cord is called the ___________________.
meninges
Cerebrospinal fluid is found between two layers of the meninges, in a space called the _____.
subarachnoid space
The conus medullaris is:
the tapering end of the spinal cord inferior to the lumbar enlargement.
The denticulate ligaments and the filum terminale are both structures that help to anchor the spinal cord and protect it against sudden displacement. true or false
true
The epidural space found between the dura mater and the wall of the vertebral canal contains a protective cushion of fat and connective tissue. true or false?
true
True or False; The thin transparent spinal meninx called pia mater separates the spinal cord from the surrounding cerebrospinal fluid.
true
All spinal nerves contain both sensory and motor axons and are therefore called mixed nerves. true or false
ture
The spinal cord is protected by which of the following? Entry field with correct answer vertebral column cerebrospinal fluid all of these choices meninge
all of these choices
What is the best description of the pia mater?
contains blood vessels that supply oxygen and nutrients to the spinal cord
What is the best description of the subarachnoid space?
between arachnoid mater and pia mater
What does a posterior (dorsal) root ganglion contain?
cell bodies of sensory neurons
The _____ plexus serves the skin and muscles of the head, neck, and superior part of the shoulders and chest.
cervical
Which of the following contain cell bodies of sensory neurons?
posterior (dorsal) root ganglia
A typical reflex arc involves the following components: 1. sensory neuron 2. motor neuron 3. sensory receptor 4. integrating center 5. effector The correct order is:
sensory receptor, sensory neuron, integrating center, motor neuron, effector
Which of the following could serve as an effector for a somatic reflex?
skeletal muscle.
