Flashcards in A.C 1.1 - Explain How The Main Parts Of The Nervous System Relates To Its Functions Deck (12):
What is the nervous system and what is it responsible for?
- system works closely with endocrine system to maintain homeostasis
- responsible for perception, behaviour, voluntary movement
What does the CNS contain?
Brain, spinal cord
How many cranial nerves are there?
How many spinal nerves are there?
What are ganglia?
What is the PNS and what does it contain?
- the nerves in the rest of the body
(Cranial, spinal, ganglia, sensory receptors)
What does the nervous system contain?
- brain & spinal cord
- cranial nerves (12 pairs)
- spinal nerves (31 pairs)
- ganglia (cell bodies)
- Enteric plexuses of the gut (ANS)
What is the SNS and what does it do?
- Controls voluntary movement (skeletal muscle)
- Consists of sensory neurones from head, body wall, limbs and special senses to the CNS > Motor neurones > skeletal muscle
What is the 3 stages of a reflex arc?
Sensory input > integration > motor output
What is the ANS and what does it do?
- controls involuntary processes (digestion, BP regulation) and smooth muscle, heart, glands
- consists of sensory receptors in visceral organs that link to CNS
- motor neurones from CNS to smooth and cardiac muscle and glands
What are sense organs and what do they detect?
- detect changes inside and outside the body
- eyes (light receptors), ears(sound, position receptors), nose (chemical receptors), skin (touch, pressure, pain, temp receptors), tongue/mouth (chemical receptors)
- detect light, sound, smell, taste, temperature, pain