Introduction :- A reflex is an involuntary and relatively stereotyped response to a specific sensory stimulus. There are many types of reflexes and every healthy person has them. In fact, we’re born with most of them. eg. When a person accidentally touches a hot object, they automatically jerk their hand away without thinking. Reflex arcs…
What is intervertebral disc ? There are a total of 24 disks in the human spine. The disks are made of fibrocartilaginous material. The outside of the disk is made of a strong material called the annulus fibrosus. Inside this protective covering is a jelly-like substance known as mucoprotein gel. This interior is known as…
INTRODUCTION : equilibrium, state of balance. When a body or a system is in equilibrium, there is no net tendency to change. In mechanics, equilibrium has to do with the forces acting on a body. When no force is acting to make a body move in a line, the body is in translational equilibrium; when…
What is a Glossopharyngeal Nerve? The glossopharyngeal nerve, known as the ninth cranial nerve (CN IX), is a mixed nerve that carries afferent sensory and efferent motor information. Sensory: Innervates the oropharynx, carotid body and sinus, posterior 1/3 of the tongue, middle ear cavity, and Eustachian tube. Special Sensory: Provides taste sensation to the posterior…
What is an Optic nerve? The optic nerve is located in the back of the eye. It is also called the second cranial nerve or cranial nerve II. It is the second of several pairs of cranial nerves. The job of the optic nerve is to transfer visual information from the retina to the vision…
The cranial nerves are the nerves that come out of the brain. They are often called the “invisible” nerves because they pass through the skull and are not readily visible. They are responsible for signaling the body to do things like talking, chewing, and keeping your eyes focused. CRANIAL NERVES LIST There are 12 pairs…
