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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
How does nervous system and circulatory system work together to maintain homeostasis?
The respiratory system feeds the cardiovascular system oxygen which the cardiovascular system then transports to every living cell in the body and simultaneously the cardiovascular system is transporting carbon dioxide to the respiratory system so that the respiratory system will expel the carbon dioxide from the body (large amounts of carbon dioxide are fatal). This balance is necessary of oxygen and carbon monoxide to cells (all of them) in producing energy that is used to move muscles and maintain the homeostatic temperature of the body.
What triggers the central nervous system ischemic response?
when the arterial blood pressure falls to less than 60mmHgType your answer here...
Is an ankle jerk reflex somatic or autonomic?
Ankle jerk is somatic. It is the reflex action, in which the afferent. connecting and the efferent neurons are involved. Autonomic nerves do not supply the striated muscles.
Where in the central nervous system is white matter?
White matter forms the bulk of the deep parts of the brain and the superficial parts of the spinal cord. Aggregates of gray matter such as the basal ganglia (caudate nucleus, putamen,globus pallidus, subthalamic nucleus, nucleus accumbens) and brain stem nuclei (red nucleus, substantia nigra, cranial nerve nuclei) are spread within the cerebral white matter.
The cerebellum is structured in a similar manner as the cerebrum, with a superficial mantle of cerebellar cortex, deep cerebellar white matter (called the "arbor vitae") and aggregates of grey matter surrounded by deep cerebellar white matter (dentate nucleus, globose nucleus, emboliform nucleus, and fastigial nucleus). The fluid-filled cerebral ventricles (lateral ventricles,third ventricle, cerebral aqueduct, fourth ventricle) are also located deep within the cerebral white matter.
Source: Link below. I didn't think of this. All the credit belongs to this website! Not me!
What is the penguins nervous system?
The penguin has a brain that sends out messages to the body for it to move.
The main parts are the nerves, spinal cord, and brain.
Contact the doctor and ask what else can be done if surgery is still not indicated, since the non-surgical treatment is not alleviating the symptoms with the current plan. It could be that you may need to wait longer for the symptoms to go away, depending on what treatment you are currently using. If the doctor does not adjust your treatment plan or explain that it will take more time to relieve the symptoms with the current approach, consider seeing a different doctor. They can't help you if they don't know that the treatment is not working, so talk to them.
Name division of autonomic nervous system responsible for controlling ciliospinal reflex?
sympathetic
What symptoms does presbycusis have?
Symptoms of presbycusis typically include increased difficulty in making out sounds of a certain volume or tone, especially when background sounds are present.
When you are walking the brain sends messages to the skeletal muscles in the legs by way of?
All the brain's messages are sent through the nervous system.
Where are most sensory receptors located?
In the human being, it is the eye. Hence the ancient method of "stick a needle in your eye" to prove death. No reflex, no life.
Is a reflex arc part of the central nervous system peripheral or both?
A reflex arc includes components of both the central and peripheral nervous systems.
Which cranial nerve is responsible for lateral movement of the eye?
Abducent nerve. Also called as abducens nerve. The sixth cranial nerve. Superior oblique muscle is supplied by trochlear nerve. All other muscles are supplied by oculomotor nerve.
Why are reflex actions very fast?
The impulse in a reflex action goes directly from the sensory neuron to the inter neuron to the spinal cord, which allows for faster actions.
Which neuron layers of an axon form the optic nerve?
There are three layers of neurons in the retina. The axons of GANGLION CELLS form the optic nerves.
An overabundance of the neurotransmitter norepinephrine is most likely to be associated with?
An overabundance of the neurotransmitter norepinephrine is most likely to be associated with manic episode.
What are three ways neurotransmitters are removed?
3 ways neurotransmitters can be removed:
1. Reuptake- reabsorption of the neurotransmitter into the neuron.
2. Enzymatic degradation- destruction of the neurotransmitter with special chemicals called enzymes.
3. Diffusion- The neurotransmitter becoming detached from the receptor and drifting out of the synaptic cleft.
A reflex arc involves the following components:
- The receptor is the part of the neuron (usually a dendrite) that detects a stimulus.
- The sensory neuron transmits the impulse to the spinal cord.
- The integration center involves one synapse (monosynaptic reflex arc) or two or more synapses (polysynaptic reflex arc) in the gray matter of the spinal cord.
- A motor neuron transmits a nerve impulse from the spinal cord to a peripheral region.
- An effector is a muscle or gland that receives the impulse from the motor neuron. In somatic reflexes, the effector is skeletal muscle. In autonomic (visceral) reflexes, the effector is smooth or cardiac muscle, or a gland.
