Neil1s 2 spinal cord by

Apuntes

• Nervous System and Its Components Neil's & spinal cord by Nerves are cells of the nervous system. They carry signals from the brain and spinal cord to muscles and other parts of the body. In the body, the nervous system has two main parts: the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which consists of nerves that branch out from the brain and spinal cord and connect to other parts of the body. The human nervous system is characterized by a network of neurons. Neurons are cells of the nervous system with three main parts: the cell body, dendrites, and the axon. The cell body contains the nucleus and other cell structures. Dendrites are short, branching structures that receive signals from other neurons. The axon transmits signals away from the cell body to other neurons, muscles, or glands. In nerve cells, the cell body is the nucleus, and it is surrounded by a membrane. • Structure of the Human Brain The human brain has a complex structure. It is protected by the skull and cerebrospinal fluid. It contains billions of neurons that transmit signals. The brain consists of three main parts: the cerebrum, ce...