Nervous System

in the spinal canal between the vertebrae.

Jayed

1 is connected

also the cardiac muscles are the only of its kind to make the heart move and pump blood to where it needs to go. smooth muscles are conected to the bones.

The parasympathetic system counteracts the sympathetic system.
It regulates breathing and heartbeats

Sensory neuron

hi

Parts of the body that do what they do on their own without us having to think about it or causing it to happen. Breathing, blood circulating and food digestion are all part of the autonomic system.

Nerves tell glands when to release chemicals.

Nerves send messages to glands. Apex-

Nerves instruct glands to send out hormones.

As with all nerves in the human body, the optic nerve transmits information. In this case, the optic nerve specifically transmits information from the retina of the eye to the brain for analysis and integration, resulting in the perception of "sight."

Voluntary muscle contraction is controlled by the central nervous system. The brain sends signals, in the form of action potentials, through the nervous system to the motor neuron that innervates several muscle fibers.
Acetylcholine (ACh) is commonly secreted at neuromuscular junctions, the gaps between motor neurons and muscle cells, where it stimulates muscles to contract (by opening gated positive ion channels).

can vegus nerve Can vagus nerve be controlled by nerve medicines

When you automatically breathe faster after exercising, your nervous system is relaying messages to the respiratory centers in your brain, particularly the medulla oblongata and pons. These areas respond to increased levels of carbon dioxide in the blood and reduced oxygen levels, triggering an increase in respiratory rate and depth to meet the body's heightened demand for oxygen and to expel carbon dioxide more effectively. This process is part of the autonomic nervous system's regulation of homeostasis during physical activity.

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what is the axon made of

The lymbic system of the brain can cause these problems.

Popliteal

yes

Nerves carry information to the brain. Nerves are bundles of axons that are long and thin and are found in the peripheral nervous system.

the somatic system control everything

In that situation, your body's sympathetic nervous system would be activated, triggering the "fight or flight" response. This response prepares you to react quickly to danger by increasing heart rate, redirecting blood flow to muscles, and releasing adrenaline. These physiological changes enhance your ability to either confront the threat or escape from it.

Exocytosis plays a crucial role in the communication between the nervous system and the muscular system by facilitating the release of neurotransmitters at synapses. When a nerve impulse reaches the end of a motor neuron, calcium ions trigger exocytosis, causing neurotransmitters like acetylcholine to be released into the synaptic cleft. These neurotransmitters then bind to receptors on muscle cells, leading to muscle contraction. This process effectively integrates neural signals with muscular responses, enabling coordinated movement.

The peripheral nervous system (PNS) is made up of all the nerves and ganglia outside the central nervous system (CNS), which includes the brain and spinal cord. It consists of two main divisions: the somatic nervous system, responsible for voluntary muscle movements and sensory information, and the autonomic nervous system, which regulates involuntary functions such as heart rate and digestion. The PNS connects the CNS to limbs and organs, facilitating communication throughout the body.

The cauda equina is the end of the spinal cord that fans out like a horse's tail.