What is 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.
Where is anterior median fissure?
medulla oblongata
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.
Why is the anterior median fissure important?
The anterior median fissure provides a groove in which the anterior spinal artery sits. From here, it provides the anterior part of the spinal cord. It is sourced from the segmental medullary arteries and the segmental spinal arteries which are sourced from the intercostal arteries.
What is a posterior median fissure?
The posterior median sulcus of medulla oblongata (or posterior median fissure or dorsal median sulcus) is a narrow groove; and exists only in the closed part of the medulla oblongata; it becomes gradually shallower from below upward, and finally ends about the middle of the medulla oblongata, where the central canal …
What is transverse fissure?
The transverse fissure (of Bichat) is the cerebral fissure that extends laterally from the ambient cistern towards the hippocampus.
What is DURA?
Dura: The outermost, toughest, and most fibrous of the three membranes (meninges) covering the brain and the spinal cord. Dura is short for dura mater (from the Latin for hard mother). Epidural means outside the dura. An accumulation of blood outside the dura is an epidural hematoma. Subdural means under the dura.
What is median sulcus?
Medical Definition of posterior median sulcus : a shallow groove along the midline of the posterior part of the spinal cord that separates the two posterior funiculi and is the external boundary of the posterior median septum.
What is in central canal?
The central canal (also known as ependymal canal) is the cerebrospinal fluid-filled space that runs through the spinal cord. The central canal lies below and is connected to the ventricular system of the brain, from which it receives cerebrospinal fluid, and shares the same ependymal lining.
What is fissure science definition?
In geology, a fissure is a fracture or crack in rock along which there is a distinct separation; fissures are often filled with mineral-bearing materials. On volcanoes, a fissure is an elongate fracture or crack at the surface from which lava erupts.
What is the anterior median fissure of the spinal cord quizlet?
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.
What is the anterior spinal cord?
In human anatomy, the anterior spinal artery is the artery that supplies the anterior portion of the spinal cord. It arises from branches of the vertebral arteries and courses along the anterior aspect of the spinal cord. It is reinforced by several contributory arteries, especially the artery of Adamkiewicz.
What does the transverse fissure separate?
parietal and occipital lobes; the transverse fissure, which divides the cerebrum from the cerebellum; and the longitudinal fissure, which divides the cerebrum into two hemispheres.
What kind of fissure is the anterior median fissure?
anterior median fissure a longitudinal furrow along the midline of the ventral surface of the spinal cord and medulla oblongata. fissure of Bichat transverse fissure (def. 2). branchial fissure pharyngeal groove.
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 .
Where are the fissures in the human body?
Henle’s f’s spaces filled with connective tissue between the muscular fibers of the heart. hippocampal fissure one extending from the splenium of the corpus callosum almost to the tip of the temporal lobe; called also hippocampal sulcus. longitudinal fissure the deep fissure between the two cerebral hemispheres.
Where is the central fissure of Rolando located?
central fissure fissure of Rolando. collateral fissure a longitudinal fissure on the inferior surface of the cerebral hemisphere between the fusiform gyrus and the hippocampal gyrus. Henle’s f’s spaces filled with connective tissue between the muscular fibers of the heart.