CHAPTER_FIFTEEN

CHAPTER_FIFTEEN - CHAPTER 15 NERVOUS SYSTEM AND COMMON...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 15 NERVOUS SYSTEM AND COMMON PSYCHIATRIC TERMS The nervous system and the endocrine system cooperate in regulating and controlling the activities of other body systems. The nervous system may be divided into two parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system consists of the brain and spinal cord. The peripheral nervous system is made up of cranial nerves, which carry impulses between the brain and neck and head, and spinal nerves, which carry messages between the spinal cord and abdomen, limbs, and chest. ORGANS OF THE CENTRAL NERVOUS SYSTEM ORGAN/STRUCTURE DEFINITION brain major portion of the central nervous system cerebrum largest portion of the brain, divided into left and right hemispheres. The cerebrum controls the skeletal muscles, interprets general senses (temperature, pain, touch), and contains centers for sight and hearing. Intellect, memory, and emotional reactions all take place in the cerebrum. ventricles spaces within the brain that contain a fluid called cerebrospinal fluid . The cerebrospinal fluid flows through the subarachnoid space around the brain and spinal cord. cerebellum located under the posterior portion of the cerebrum. Its function is to assist in the coordination of skeletal muscles and to maintain balance. ( hindbrain ) brainstem stem-like portion of the brain that connects with the spinal cord. Ten of the 12 cranial nerves originate in the brainstem pons literally means bridge . It connects the cerebrum with the cerebellum and brainstem. medulla oblongata located between the pons and spinal cord. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
It contains centers that control respiration, heart rate, and the muscles in the blood vessel walls, which assist in determining blood pressure. midbrain most superior portion of the brainstem cerebrospinal fluid (CSF) clear, colorless fluid contained in the ventricles that flows through the subarachnoid space around the brain and spinal cord. It cushions the brain and spinal cord from shock, transports nutrients, and clears metabolic waste. spinal cord passes through the vertebral canal extending from the medulla oblongata to the level of the second lumbar vertebra. The spinal cord conducts nerve impulses to and from the brain and initiates reflex action to sensory information without input from the brain. meninges three layers of membrane that cover the brain and spinal cord dura mater tough outer layer of the meninges arachnoid delicate middle layer of the meninges. The arachnoid membrane is loosely attached to the pia mater by web-like fibers, which allow for the subarachnoid space . pia mater thin inner layer of the meninges 2
Background image of page 2
ORGANS OF THE PERIPHERAL NERVOUS SYSTEM ORGANS/STRUCTURES DEFINITION nerve cord-like structure that carries impulses from one part of the body to another. There are 12 pairs of cranial nerves and 31
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/22/2010 for the course HSC 2531 taught by Professor Chancey during the Spring '10 term at Santa Fe College.

Page1 / 12

CHAPTER_FIFTEEN - CHAPTER 15 NERVOUS SYSTEM AND COMMON...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online