A description of the nervous system

A part of the hypothalamus monitors the level of glucose in the blood and, when it notices a significant decrease, it sends messages to the stomach producing sensations of hunger.

The capsule itself ends within the cerebrum, but the axons that pass through it continue down to the brain stem, and spinal cord. A gyrus is a raised fold of tissue. The CNS acts as the control center of the body by providing its processing, memory, and regulation systems.

What is the Nervous System?

There are 2 divisions of the autonomic nervous system in the body: The putamen is the more lateral of the two. The corpora quadrigemina consists of the tectum which is the roof of the brain stem, and of four protrusions located on the tectum which are called colliculi.

The gastrula has the shape of a disk with three layers of cells, an inner layer called the endodermwhich gives rise to the lining of most internal organs, a middle layer called the mesodermwhich gives rise to the bones and muscles, and an outer layer called the ectodermwhich gives rise to the skin and nervous system.

Information about smell travels directly to the temporal lobe. Animals as diverse as insects and vertebrates share a similar genetic clock system. Because it has a rounded shape, it was once called "the bulb.

Thus the body is prepared for an extraordinary effort. This fold deepens, and then closes up at the top. Once the networks of interneurons in the CNS evaluate sensory information and decide on an action, they stimulate efferent neurons.

Individual axons of the nerve are bundled into groups of axons called fascicles, wrapped in a sheath of connective tissue called the perineurium.

Nervous system

A system can be divided hierarchically into subsystems, which can be further subdivided into sub-subsystems and components. The loss of potassium along with the pumping of sodium ions back out of the cell through the sodium-potassium pump restores the cell to the mV resting potential.

The nervous system can suffer from a number of afflictions, including cancer e. Information conveyed through the nervous system moves along networks of cells called neurons. Messages from the brain, often in response to information received by way of the sensory nerves, are delivered to the muscles by the motor nerves.

One very important subset of synapses are capable of forming memory traces by means of long-lasting activity-dependent changes in synaptic strength.

Because it is convoluted, a large amount of cortical tissue fits into a relatively small area. The system of neurons and tissues that regulates the actions and responses of vertebrates and many invertebrates. The nervous system of vertebrates is a complex information-processing system that consists mainly of the brain, spinal cord, and peripheral and autonomic nerves.

The two hemispheres of the brain are covered by a layer of cells called the cortex. (Cortex means "bark" in Latin.) The surface of the cortex is ridged, as it is made up of gyri and sulci.

A gyrus is a raised fold of tissue. A sulcus is a groove between two gyri. A particularly deep sulcus is called.

Nervous System

The nervous system of vertebrates (including humans) is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The (CNS) is the major division, and consists of the brain and the spinal cord.

The spinal canal contains the spinal cord, while the cranial cavity contains the brain. The CNS is enclosed and protected by the meninges, a three-layered system of. nervous system the organ system that, along with the endocrine system, correlates the adjustments and reactions of an organism to internal and environmental janettravellmd.com is composed of the brain, spinal cord, and nerves, which act together to serve as the communicating and coordinating system of the body, carrying information to the brain and relaying instructions from the brain.

nervous system

The peripheral nervous system consists of a network of nerves that connects the rest of the body to the CNS. The two systems work together to collect information from inside the body and from the environment outside it.

The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. It is essentially the body's electrical wiring.

Nervous System

Structurally, the nervous system has two components: the central nervous system and the peripheral nervous system.

A description of the nervous system
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Nervous system | definition of nervous system by Medical dictionary