Is Medullated and myelinated the same?
Between the neurolemma and the axis cylinder is the medullated sheath, composed of a fatty substance known as myelin. These sensations are carried by medullated nerve fibres, and are slow to return after injury to the nerves.
What is cadavra?
A cadaver is a dead body, especially a dead human body. For example, cadaver tissue is tissue that has been harvested from a donor body.
What do you infer from the word cadaver organs?
If you are dead, you are a corpse, but if Dr. Frankenstein robs your grave so he can use your body for research, you become a cadaver. Cadaver comes from the Latin verb, cadere, which means “to fall.” Its English origins refer to soldiers who died in battle, i.e. the fallen.
Which pain is known as cutaneous pain?
Pain in the pelvis, headaches, and cuts to the skin all fall under somatic pain. Somatic pain is often divided into two forms. The first, called superficial pain, occurs when pain receptors in the skin, mucus, and mucous membranes are activated. Common, everyday injuries usually cause superficial somatic pain.
Are retinal nerve Fibres myelinated?
Myelinated retinal nerve fiber layers (MRNF) are retinal nerve fibers anterior to the lamina cribrosa that, unlike normal retinal nerve fibers, have a myelin sheath. Clinically, they appear to be gray-white well-demarcated patches with frayed borders on the anterior surface of the neurosensory retina.
Whats the difference between a corpse and a cadaver?
Definition: Corpse: Corpse refers to a dead body, especially that of a human being. Cadaver: Cadaver refers to a dead human body that is intended to be dissected.
What is cadaver bone graft?
The bone graft is usually a combination of specially prepared freeze-dried cadaver bone or bovine bone and bone harvested from the patient’s upper or lower jaw. After six months of healing, when the bone becomes solid enough to support an implant, the implants are placed.
What is cadaver organ?
An organ transplanted after its owner’s death.
What are the 3 pain pathways?
Thus, internationally pain has been classified into three major classes—nociceptive pain, neuropathic pain and inflammatory pain [1]. Primarily, both the CNS and PNS are involved in the mechanism and pathways of all variations of pain perception.
What is a radiating pain?
Radiating pain is caused by medical conditions that affect the nerves in your body. This results in traveling pain that spreads from the original pain point to a larger area of the body. Conditions that may trigger radiating pain are those that punch or pull on a nerve, such as a herniated or bulging disc.
What diseases cause cotton wool spots?
Cotton-wool spots (CWSs) are common retinal manifestations of many diseases including diabetes mellitus, systemic hypertension, and acquired immunodeficiency syndrome. Clinically they appear as whitish, fluffy patches on the retina and eventually fade with time.
Where is myelin found?
Myelin is formed in the central nervous system (CNS; brain, spinal cord and optic nerve) by glial cells called oligodendrocytes and in the peripheral nervous system (PNS) by glial cells called Schwann cells. In the CNS, axons carry electrical signals from one nerve cell body to another.