THE NERVOUS SYSTEM

Question 1

what is the nervous system?

Answer 1

-Specialised network of cells in the human body/ primary internal communication system
Functions:
-To collect, process and respond to info in the environment
-To coordinate the working of different organs and cells in the body

Question 2

What are the two subsystems involved in the nervous system

Answer 2

Central nervous system (CNS) - connects the brain and spinal cord and is the origin of all complex demands

Peripheral nervous system (PNS) - transits messages to and from the CNS via neurons.

Question 3

What is the outer layer of the brain called?

Answer 3

-The brain outer layer is known as the cerebral cortex and is split into two hemispheres

Question 4

What is the Peripheral Nervous System and what are the two subsystems involved?

Answer 4

-The PNS transmits messages, via millions of neurons (nerve cells) to and from the CNS
- Autonomic Nervous System (ANS) - governs vital functions in the body such as breathing, heart rate, digestion, sexual arousal and stress responses
- Somatic Nervous System (SNS) - controls muscle movement and recieves info from the sensory receptors

Question 5

What is a gland?

Answer 5

An organ in the body that synthesizes substances such as hormones