WebThe central nervous system is divided into two parts: the brain and the spinal cord. The average adult human brain weighs 1.3 to 1.4 kg (approximately 3 pounds). The brain contains about 86 billion nerve cells (neurons) and trillions of "support cells" called glia. The spinal cord is about 43 cm long in adult women and 45 cm long in adult men ... WebWhile the autonomic nervous system is in charge of involuntary functions like digestion, respiration, and heart rate control, the somatic nervous system is in charge of voluntary functions like movement. 3) Astrocytes, oligodendrocytes, ependymal cells, and microglia are the four types of CNS glial cells.

Ch 35 Nervous System Test Answer Key (book)

WebJun 30, 2016 · The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions. The anterior horn cells, although technically part of the central nervous system (CNS), are sometimes discussed with ... WebFeb 5, 2024 · The system is divided into the central nervous system, or CNS, that consists of the brain and spinal cord, and the peripheral nervous system, or PNS, that is made up of nerves that travel to and ... huntington small business online

Peripheral Nervous System: What Is It, Parts & Functions

WebThe nervous system of vertebrates has two main divisions: the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, which in humans includes 12 pairs of cranial nerves, 31 pairs of spinal nerves, and the autonomic, or involuntary, nervous system. Anatomic structures such as the nervous system are … Webparts of the body as with other higher vertebrates the human nervous system has two main parts the central nervous system the brain and spinal cord and the peripheral nervous system nervous system l introduction classification l function l cns - Feb 01 2024 web hello everyonetoday i am talking about nervous system introduction Webparts of the body as with other higher vertebrates the human nervous system has two main parts the central nervous system the brain and spinal cord and the peripheral nervous … huntington smartinvest checking