Biopsych Flashcards
1
Q
Nervous system
A
- A specialised network of cells in the human body and is our primary internal communication system
- Divided into the central nervous system and the peripheral nervous system
2
Q
Role of the nervous system
A
- To collect, process and respond to information in the environment
- To coordinate the working of different organs and cells in the body
3
Q
Central Nervous System
A
- Made up of the brain and spinal cord
- The origin of all complex commands and decisions
4
Q
The Brain
A
- The centre of all conscious awareness
- Cerebral cortex is the outer layer of the brain + distinguishes human mental functions from those of animals
5
Q
Spinal Cord
A
- An extension of the brain
- Responsible for reflex actions
- Passes messages to and from the brain and connects nerves to the PNS
6
Q
Peripheral Nervous System
A
- Transmits messages via millions of neurons to and from the central nervous system
- Subdivided into autonomic and somatic nervous system
7
Q
Autonomic Nervous System
A
- Governs vital functions in the body such as breathing, heart rate and stress responses (involuntary effect)
- Subdivided into sympathetic and parasympathetic nervous system
8
Q
Sympathetic Nervous System
A
Activates internal organs and increases bodily activities
9
Q
Parasympathetic Nervous System
A
Relaxes internal organs and decreases bodily activities
10
Q
Somatic Nervous System
A
- Transmits information from receptor cells in the sense organs to the CNS
- Receives information from the CNS that direct muscles to act voluntary)
11
Q
Endocrine System
A
- One of the body’s major information systems that instructs glands to release hormones directly into the blood stream
- These hormones are carried towards target organs in the body
12
Q
Gland
A
An organ in the body that syntheses substances such as hormones
13
Q
Hormone
A
- Chemical substances that circulate in the bloodstream and only affect target organs
- Produced in large quantities but disappear quickly
- Effects are very powerful
14
Q
Pituitary Gland
A
- Release lots of hormones
- Master gland: hormones released control and stimulate the release of hormones from the other glands in the endocrine system
15
Q
Pineal Gland
A
- Melatonin is released
- Responsible for important biological rhythms
