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Nervous System
This category is for questions about the mechanical and chemical process of reactions to internal and external stimuli, ranging from the brain down to the spinal cord, and all nerves, cells and tissues in between.
3,047 Questions
Where is the olfactory nerve located?
Since olfactory refers to the sense of smell, the olfactory nerve would be located in the nose, or nasal cavity.
What is the drug that increases the activity of the central nervous system is known as?
q-1 difference plate & block like
When you are scared which nervous system does it triger?
If you are startled, and in the "flight or fight" mode, the sympathetic autonomic nervous system is active, which will cut of digestion, increase heartrate, dilate pupils, etc.
Are your arms and legs parts of your central nervous system?
They belong to the peripheral nervous system, as opposed to the central nervous system (as they are to be found on the periphery of the body).
How does poor nutrition effect the circulatory system?
It puts a strain on the heart because of all the extra miles of blood vessels it has to pump through.
What does vagal nerve stimulation do?
The vagal nerve stimulator has two parts: an electrode that wraps around the left vagus nerve in the neck; and a pulse generator, which is implanted under the skin below the collarbone. The two parts are connected by a wire.
What type of neuron carries information to muscles and glands?
It is a set of nerves called the Motor Nerves that deliver signals to the muscles.
Difference between sensory and motor nerve?
Sensory neurons have their cell bodies in the dorsal ganglion at the one or two segemental levels from the dendrite entry. They make a synapse onto interneurons in spinal cord. Motor neurons have their cell bodies in the spinal cord.
What is the substance released at axon terminals?
The substance that is released at an axonal ending to propagate the nerve impulse to the next nerve or muscle is called
What describes the parasympathetic division of the autonomic nervous system?
The autonomic nervous system.
What is the origin of most cranial nerves?
cranial nerves arise from the brain inside the cranial cavity.
How does the nervous system coordinate the body's response to stimuli?
It looks across the entire world and sees their best friend and gets really happy
What would Direct stimulation of the motor cortex result in?
It would cause involuntary movement or a sense of touch on the person.
List the division of the autonomic nervous system?
the autonomic nervous system (ANS) includes the peripheal nerves and ganglia on either side of the spinal cord ( note: some textbooks include the ANS as a division pf the peripheal nervous system both ways are correct.)
Is there electricity in your body?
Yes, the nerves act like the wires in your house to send elctrical signals through your body.
What is the central center of the nervous system?
Brain.
The brain is the control center of the body. It consists of three main components: the forebrain, the brainstem, and the hindbrain. The forebrainis responsible for a variety of functions including receiving and processing sensory information, thinking, perceiving, producing and understanding language, and controlling motor function. The forebrain contains structures such as the thalamus and hypothalamus which are responsible for such functions as motor control, relaying sensory information, and controlling autonomic functions. It also contains the largest part of the brain, the cerebrum. Most of the actual information processing in the brain takes place in the cerebral cortex.
Can Lupus affect the nervous system?
Lupus can also effect the central nervous system, causing seizures, depression, and psychosis
The best example of cooperative autonomic effects is seen in controls of the external genitalia. Parasympathetic stimulation causes vasodilation of blood vessels in the external genitalia, and is responsible for erection of the male penis or female clitoris during sexual excitement. Sympathetic stimulation then causes the ejaculation of semen by the penis or reflex contractions of the vagina during an orgasm.
