bio-psychology- Nervous System and Endrocine system

Question 1

Define the nervous system (NS)

Answer 1

• CNS (central nervous system) and PNS (peripheral nervous system)

-Communicates using electrical signals

Question 2

Define Central nervous system (CNS)

Answer 2

-Brain
-Spinal cord
-Origin of all complex commands and decisions

Question 3

Define Peripheral nervous system (PNS)

Answer 3

-Sends info to CNS

-Transmits messages from CNS to muscles and glands in body

Question 4

Define Somatic nervous system (SNS)

Answer 4

-Transmits info from receptor cells in effectors to CNS

-Receives info from CNS which directs muscles to act

Question 5

Define Autonomic nervous system (ANS)

Answer 5

-Transmits info to and from internal organs

-‘Autonomic’ means involuntarily

Question 6

What are the 2 divisions off the ANS

Answer 6

-SNS (sympathetic nervous system)
-PNS (parasympathetic nervous system)

Question 7

Define the Endocrine system

Answer 7

-A network of glands across the body that secrete chemical messages called hormones

-Works alongside nervous system (NS)

Question 8

Define hormone

Answer 8

Chemical messengers released from endocrine glands

Question 9

Hormones are secreted where?

Answer 9

Into the bloodstream

Question 10

What is the master gland called?

Answer 10

Pituitary gland

Question 11

Name the 7 glands in the endocrine system

Answer 11

-Pituitary gland (master gland)
-Hypothalamus
-Thyroid (thyroxine)
-Adrenal gland (adrenaline)
-Pancreas (insuline)
-Ovaries (oestrogen)
-Testes (testosterone)

Question 12

Explain fight or flight

Answer 12

-Occurs during a stressful event

-Stressor perceived = hypothalamus triggered = activates pituitary gland = triggers activity in sympathetic branch of ANS (autonomic NS) = ANS changes from parasympathetic- sympathetic state

-Adrenaline is produced, secreted from adrenal gland into bloodstream