PSYA01H3 Chapter Notes - Chapter 4: Homeostasis, Hemoglobin, Meninges
Document Summary
The brain and its components: approx 10- 100 billion nerve cells. Brain 3 major functions: master of controlling and communicating behaviour. 2. process + storing info from environment: regulate body"s physiological processes, peripheral nervous system: consists of neurons that convey messages to and from the central. This is broken into two parts which are the somatic and automatic. Sensory info (environment + inside body) is transmitted from sensory organs to brain+ spinal cord. Info from head + neck reaches brain through cranial nerves. Sensory info from rest of body reaches spinal cord to brain through spinal nerves. Cranial nerves- bundle of nerve fibers attached to base of brain, conveys sensory info from face + head + carry msgs to muscle + glands. Spinal nerve; nerves attached to spinal cord; convey sensory info from body + carry msgs to muscle and glands: central nervous system: consists of the brain and the spinal cord.
