Biopsychology- Systems = PP2 Flashcards
The Nervous system splits into two branches:
- Central nervous system
- Peripheral Nervous system
The Central nervous system splits into the:
- spinal chord
- Brain
The Peripheral nervous system splits into the:
- Somatic nervous system
- Autonomic nervous system
The Autonomic nervous system splits into the:
- Parasympathetic Branch
- Sympathetic Branch
1) The Role of the sympathetic branch is to
2) Give 2 examples
1) Prepare the Body for fight or flight response
2) Inhibits stomach activity and Dilates pupils
Function of The Testes in the Endocrine system
give 2 examples of how the hormone works
To excrete Testosterone.
Testosterone develops a boys body through puberty to prepare it for adulthood. For example, it deepens the voice and promotes an increase in muscle mass.
Function of The Adrenal Medulla gland in the Endocrine system
give 2 examples of how the hormone works
The Adrenal Medulla secretes Adrenaline into the bloodstream. This prepares the body for a fight or flight response by activating the sympathetic branch of the nervous system.
2 examples of this are dilation of pupils and an increase in heart rate
Role of the Parasympathetic branch
2 examples
To Conserve energy and maintain a balanced state.
It Reduces Heart rate and increases activity in the stomach
Process of the Sympathetic branch in Fight Or Flight Response
eg: 1) -> 2)
1) Hypothalamus detects stimulus
2) Adrenal Medulla activated
3) Secretes Adrenaline
4) Activate Fight or Flight
5) Sympathetic branch activated
Process of the Parasympathetic branch in Fight Or Flight Response
eg: 1) -> 2)
1) Pituitary gland
2) Anterior Pituitary
3) Releases ACTH (Adrenocorticotrophic Hormone)
4) Activate Adrenal Cortex
5) Secretes Cortisol
6) Parasympathetic branch Activated
Function Of Glands and Hormones in the Endocrine System
Glands Produce Hormones. These hormones regulate cell or organ activity and activate vital physiological processes
What is the Structure and Function of the Motor Neuron
Function: To send messages away from the brain
Structure: Long Axon, Short Dendrites
What is the Structure and Function of the Sensory Neuron
Function: To carry information towards the brain
Structure: Short Axons, Long Dendrites
What is the Structure and Function of the Relay Neuron
Function: To connect sensory neurons to Motor neurons
Structure: Short Dendrites, Short Axons
Explain the Process of Synaptic Transmission
1) Action potential Arrives at Pre-synaptic cell
2) Pre-synaptic neuron has vesicles containing neurotransmitters
3) action potential stimulates release into synaptic cleft
4) Neurotransmitters diffuse across gap to bind with postsynaptic receptor sites
5) This converts chemical message back into Electrical impulse
6) Effects can be excitatory (increase positive charge in post-synaptic cell, more likely to fire) or inhibitory (increase in negative charge in post-synaptic cell, less likely to fire)
