The nervous and endocrine system Flashcards
1
Q
What is the nervous system
A
- a specialised network of cells in the human body, it is also our primary internal communication system
2
Q
What are the two main function of the nervous system
A
- to collect, process and respond to information in the environment
- to co-ordinate the working of different organs and cells in the body
3
Q
What are the two sub-systems it is divided into
A
- CNS
- PNS
4
Q
What is the CNS made up of
A
- the brain and spinal cord
5
Q
What does the PNS do
A
- transmit messages, via millions of neurons to and from the CNS
6
Q
What is the PNS further sub-divided into
A
- autonomic nervous system
- somatic nervous system
7
Q
What does the ANS do
A
- governs vital functions in the body such as breathing, heart rate, digestion, sexual arousal etc
8
Q
What does the SNS do
A
- controls muscle movement and receives information from sensory receptors
9
Q
What does the endocrine system do and how fast does it function
A
- works alongside the nervous system to control vital functions in the body
- works slower than the nervous system but has widespread and powerful effects
10
Q
What do glands such as the thyroid gland produce
A
- hormones
11
Q
Where are hormones secreted
A
- into the bloodstream and effect any cell with a receptor for that particular hormone
12
Q
What hormone does the thyroid gland produce
A
- thyroxine
13
Q
What does the hormone thyroxine effect
A
- cells in the heart, as well as affecting cells throughout the body increasing metabolic rates, this in turn effects growth rates
14
Q
1-What is the major endocrine gland
2-Where is it located
3-What does it do
A
- pituitary gland or ‘master gland’
- in the brain
- it controls the release of hormones from all the other endocrine glands in the body
15
Q
Outline how the endocrine and nervous system work together
A
- work in parallel with one another
