Flashcards in nervous system Deck (34):
what is the central nervous system
The central nervous system consists of the brain and the spinal cord.
The most complicated organ in the human body.Consists of three parts cereberum,cerebellum,medulla(brain stem).
Biggest part of the brain which controlls senses,imaginiation and thoughts
Second largest part of the brain which controlls motion ballance and ability to learn new things
Medulla or brain stem
The part of the brain connected to the spinal cord.it is responsible for breathing,digestion and heart beat
Peripheral Nervous system
Made up of sensory and motor neurons.it connects the central nervous system to the rest of the body.The peripheral nervous system also detects and responds to change
Detects change in the environment and sends messages to the central nervous system
Nerve cells that causes an organ such as a muscle to respond to a stimulus
all nerves are made from neurons that sense the world around you
Somatic nervous system
Collect information from sensory organs like the ears and eyes.Also coordinates movement of the body
Autonamic nervous system
Control System that acts largely unconsciously and regulates bodily functions such as the heart rate,digestion and urination
Spherical part of the neuron that contains the nucleus.
Pick up messages from other cells and takes that information to the cell body
transmits electrical impulses away from the cell body and then sends them to other cells
The ability of a living organism to maintain a stable internal environment
Negative feedback is a response that occurs in the opposite direction to the stimulus.
Results in the response going in the same direction
Stimulus response model
Multicellular organism -system -organs -tissues -cells
A specialised cell or group of nerve endings that responds to sensory stimuli.
A specialised structure that detects stimuli
Receptors that detects temperature changes
Receptors that detect touch,presure and motion.
Detects concentration of chemicals
Recptors that detect light
Receptors are nerve cells that a which can be found on your skin,eye,nose,ears,tongue.
Central nervous system functions
The brain is centre of our thoughts and is the origin control over body movements.The spine controls transfers of neural signals.Combines sensory information and coordinates conscious and unconscious activity.
Composed of endocrine glands that release hormones into the blood stream.The hormones are then transported through the circulatory system to the effects which causes a response
Chemical substances that are produced by glands and circulated in the blood stream
A network of neurons that open and close to increase and decrease information to the brain.
Part of the brain which all sensory information except smell passes before going to other parts of the brain.
A nerve that nervous impulses through the nervous system.They give the link between sensory and motor neurons.
Part of the brain involved in regulating sleep,sexual arousal and Breathing.coordinates some body movement