What is the cross sectional anatomy of the spinal cord?
A cross section of the spinal cord reveals white matter arranged around a butterfly-shaped area of gray matter. The white matter consists of myelinated fibres, or axons, that form nerve tracts ascending to and descending from the brain. The white matter is grouped into discrete sectors called funiculi.
What is a transverse cross-section?
Transverse Section Definition A transverse section is a cross-sectional part that is achieved by cutting the body or any part of the body structure in real or with help of imaging techniques in a horizontal plane.
What are the sections of the spine?
The spine has three normal curves: cervical, thoracic and lumbar. There are seven cervical vertebrae in the neck, 12 thoracic vertebrae in the torso and five lumbar vertebrae in the lower back.
What are the layers of the spinal cord?
Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.
What is the space between a dendrite and an axon called?
The space between the dendrites of one neuron and the axon of another neuron is called the synapse.
How do you draw a cross-section?
- Take a thin strip of paper and place it along the transect line on the map.
- On a piece of graph paper, draw the horizontal axis of your graph exactly the same length as the transect A-B.
- Draw two vertical axes using a suitable scale.
- Place the strip of paper along the x-axis at the bottom of your graph.
How many segments consists in the spinal cord?
8 cervical segments forming 8 pairs of cervical nerves (C1 spinal nerves exit the spinal column between the foramen magnum and the C1 vertebra; C2 nerves exit between the posterior
What are the three parts of the spinal cord?
Cervical (neck).
What are the parts and functions of the spinal cord?
What are the parts and functions of the spinal cord? Spinal cord and nerves: The spinal cord is a column of nerves that travels through the spinal canal. The cord extends from the skull to the lower back. Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). These nerves carry messages between the brain and muscles.
What is the difference between brain and spinal cord?
How are the Spinal Cord and Brain Protected? Answer. The spinal cord is protected by the spinal column and the brain is protected by the skull.