What is the ventral anterior median fissure?

The anterior median fissure (ventral or ventromedian fissure) contains a fold of pia mater, and extends along the entire length of the medulla oblongata: It ends at the lower border of the pons in a small triangular expansion, termed the foramen cecum.

Where is the anterior gray horn?

the spinal cord
Anterior horn cells (α-motor neurons), located in the anterior gray matter of the spinal cord, are found at every segment and are concentrated in the cervical and lumbosacral enlargements. Morphologic differentiation of the anterior horn cells is most evident from 12 to 14 weeks’ gestation.

What is the anterior horn?

The anterior horn of the spinal cord (also known as the anterior cornu) contains the cell bodies of motor neurons that affect the skeletal muscles.

What do fissures do in the brain?

The main cerebral fissures are the lateral fissure, or fissure of Sylvius, between the frontal and temporal lobes; the central fissure, or fissure of Rolando, between the frontal and parietal lobes, which separates the chief motor and sensory regions of the brain; the calcarine fissure on the occipital lobe, which …

What is the medical definition of an anterior median fissure?

Medical Definition of anterior median fissure : a groove along the anterior midline of the spinal cord that incompletely divides it into symmetrical halves — called also ventral median fissure Learn More About anterior median fissure

Where are the fissures of the medulla oblongata located?

(Anterior median fissure labeled at bottom center.) The anterior median fissure ( ventral or ventromedian fissure) contains a fold of pia mater, and extends along the entire length of the medulla oblongata: it ends at the lower border of the pons in a small triangular expansion, termed the foramen cecum.

How big is the median fissure of the spinal cord?

The anterior median fissure of the spinal cord has an average depth of about 3 mm, but this is increased in the lower part of the spinal cord .

Which is fissure contains the fold of pia mater?

[1] The anterior median fissure (ventral or ventromedian fissure) contains a fold of pia mater, and extends along the entire length of the medulla oblongata: it ends at the lower border of the pons in a small triangular expansion, termed the foramen cecum.