Spinal Reflexes Lab Report
4015 Lab – PNS, Spinal Cord and Spinal Reflexes
Activity 1 – Nerves
Type the numbers, in the space provided, of the structures pointed out on the diagram of a cross section of a nerve in your lab book with the following terms:
6 axon
12 endoneurium
1 epineurium
2 fascicle
7 motor ending
10 myelin sheath
9 neurilemma
11 node of Ranvier
3 perineurium
5 peripheral nerve
8 Schwann cell
4 sensory receptors
What is the difference between a nerve and a neuron? They are both completely different a nerve is a cord like organ that is composed of many nerve fibers in the connective tissue and a neuron is a nerve cell. They are one in the same but are completely different.
What is a nerve fiber? Addition of a nerve cell
What …show more content…
Layer of tissue in the central nervous system
Where is the white matter? Tissue that is on the superficial of the gray matter of the spinal cord.
What makes the white matter white and what structures of the neuron are predominant in white matter? Capillaries in tissue make the white matter look white to the naked eye. The largest structure of the spinal cord white matter is myelinated axons.
Activity 3 – Spinal Nerves and Nerve Plexuses
In the text and APR there are images of the human vertebral column. Between each pair of vertebrae exits a spinal nerve. Find the cervical, thoracic, lumbar and sacral vertebrae and the spinal nerves associated with each. Note the number of cervical, thoracic, lumbar and sacral spinal nerves.
How many pairs of spinal nerves are there?
Activity 1 – Nerves
Type the numbers, in the space provided, of the structures pointed out on the diagram of a cross section of a nerve in your lab book with the following terms:
6 axon
12 endoneurium
1 epineurium
2 fascicle
7 motor ending
10 myelin sheath
9 neurilemma
11 node of Ranvier
3 perineurium
5 peripheral nerve
8 Schwann cell
4 sensory receptors
What is the difference between a nerve and a neuron? They are both completely different a nerve is a cord like organ that is composed of many nerve fibers in the connective tissue and a neuron is a nerve cell. They are one in the same but are completely different.
What is a nerve fiber? Addition of a nerve cell
What …show more content…
Layer of tissue in the central nervous system
Where is the white matter? Tissue that is on the superficial of the gray matter of the spinal cord.
What makes the white matter white and what structures of the neuron are predominant in white matter? Capillaries in tissue make the white matter look white to the naked eye. The largest structure of the spinal cord white matter is myelinated axons.
Activity 3 – Spinal Nerves and Nerve Plexuses
In the text and APR there are images of the human vertebral column. Between each pair of vertebrae exits a spinal nerve. Find the cervical, thoracic, lumbar and sacral vertebrae and the spinal nerves associated with each. Note the number of cervical, thoracic, lumbar and sacral spinal nerves.
How many pairs of spinal nerves are there?