Biology revision

Question	Answer
Synaptic cleft	The gap between the sensory and relay nuerone.
Axon	a long thin projection carrying impulses all around the body.
Myelin sheath	isulates the axon and makes transmissions faster.
Dendrites	Branched fibres , that pick up information from arriving from receprtors or other nuerons.
Cell body	the cell body contains nucleus and cytoplasm, like most animals.
infectious disease	disease which can be passed from one individual to another.
Microorganisms	bacteria , viruses , and other organisms that can only be seen by using a microscope.
Pathogen	microorganism that causes disease.
Bacteria	microorganism that can cause disease
viruses	microorganism that takes over cells and reproduces apidly, causing disease.
Central Nervous System	( CNS ) is composed of the brain and the spinal cord.The brain recieves sensory information from the nerves that pass through the spinal cord, as well as other nerves such as those from sensory organs involved in sight and smell.
Peripheral nervous system	Information flows to the central nervous system from the (PNS) which senses signals from the enviroment outside the body.
Brain	The brain is divided into three major anatomical regions, the prosencephalon (forebrain), mesencephalon (midbrain), and the rhombencephalon (hindbrain).

Resource summary

	Created by hannahbarker99 over 9 years ago