The Babinski reflex is a somatic reflex seen in infants. When the side of the foot is stroked, the toes spread apart. Another example of a somatic reflex is the ankle-jerk reflex, which causes the ankle to bend the foot towards the ground when the Achilles tendon is tapped.Continue Reading
Somatic reflexes are movements of body parts that result nearly instantly when a certain stimulus is delivered. Reflexes are able to occur so quickly because the stimuli that cause them are not processed in the brain. Rather, the nerve impulse generated by the stimulus is relayed only to the spinal cord. A motor nerve impulse, which signals for the muscles to react in a certain way, is then sent back from the spinal cord to the muscle.
Humans display many different reflexes. The biceps reflex causes the forearm to jerk when the biceps brachii is tapped with a hammer. The corneal reflex causes a person to blink when the cornea of the eye is touched, and the knee-jerk reflex causes the lower leg to kick outward when the patellar tendon just beneath the knee cap is struck. Blushing is another reflex; the face turns red when a person experiences embarrassment or shame.Learn more about Nerves
The BBC describes a reflex arc as the nerve pathway through which neural impulses travel to cause a quick autonomic response known as a reflex. Reflexes are not something people think about, rather, they are impulsive reactions to stimuli.Full Answer >
The most complete pressure point charts are on AcupunctureProducts. The site divides the pressure points by the organs each is associated with. Martial artists use a different pressure point chart that focus on only the 45 or so points that affect combat.Full Answer >
The spine's central canal provides a structure within the vertebral column to house the spinal cord and nerve bundles. The term central canal can refer to other anatomical features, such as the haversian canal of the ostia structure in bones, but that name typically refers to the spinal canal.Full Answer >
In vertebrates, such as humans, the nervous system consists of two main components: the central nervous system and the peripheral nervous system, as noted by Inner Body. The brain and spinal cord make up the CNS, and the PNS includes the sensory neurons and nerves that link the CNS to other parts of the body. The main function of the nervous system is to transmit nerve signals throughout the body to coordinate its movement and various other activities.Full Answer >