Nervous and endocrine systems

Question 1

what is the central nervous system’s purpose?

Answer 1

collect, process and res;ojnd to info

coordinate organs and cells

Question 2

what does the CNS consist of?

Answer 2

• brain is centre of function with cerebral cortex as outer layer
• extends to spinal chord and is responsible for reflex actions
• passes info to and from brain. and connects nerves the PNS

Question 3

What does the peripheral nervous system (PNS) consist of?

Answer 3

• transmit messages to and from CNS
• Autonomic nervous system (ANS)
• Somatic nervous system (SNS)

Question 4

What is the Autonomic nervous system (ANS)?

Answer 4

governs vital function like breathing, heart rate and street response

Question 5

what is the Somatic nervous system (SNS)?

Answer 5

controls muscle movement and recipes info from sensory receptors

Question 6

(Endocrine)

how is the ANS involved in the fight or flight response in stressful situations?

Answer 6

the ANS has a resting parasympathetic branch and the sympathetic branch for high stress situations
(increases things like adrenaline)

Question 7

(Endocrine)

what is the thyroid gland and how does it affect cells in multiple organs?

Answer 7

• secretes thyroxine into blood that effects any cells with receptor to that hormone
• affects the heart and metabolic rates through the body

Question 8

(Endocrine)

what is the major endocrine gland?

Answer 8

• pituitary gland in the brain

- controls release of hormone from all other endocrine glands

Question 9

(Endocrine)

what is the process of the fight or flight response in a high stress situation?

Answer 9

• stressor perceived so hypothalamus trigger sympathetic branch of ANS
• adrenaline released from gland which causes bodily changes needed for fight or flight (like increase HR)
• once threat has passed the ANS returns to parasympathetic and body returns to resting state