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THE ENDOCRINE SYSTEM (Biopsychology)
Terms in this set (14)
What is the endocrine system?
-It is a major information system that works alongside the nervous system to control vital bodily functions
-It also instructs glands to release hormones, but works much slower than the nervous system
What is a gland?
-An organ in the body that synthesises substances such as hormones.
What are the main glands?
What is the significance of the pituitary gland?
(Located in the brain)
-It controls the release of hormones from all the other endocrine glands in the body
What is the significance of the thyroid gland?
-It produces thyroxine that increases heart rate & metabolic rate by affecting heart and bodily cells
What is the significance of the adrenal gland?
-It produces adrenaline which is part of the body immediate stress system (Stimulates heart rate, contracts blood vessels & dilates air passages)
What are hormones?
-They are chemical substances that circulate in the bloodstream and only affect target organs
Which part of the nervous system works in parallel to the endocrine system to produce the "Fight or Flight" response?
-The automatic nervous system (ANS)
Stage 1 of fight or flight response
-Stressor is perceived, causing the hypothalamus to trigger activity in the sympathetic branch of the ANS
Stage 2 of fight or flight response
-The ANS changes from its resting parasympathetic state to the psychologically aroused sympathetic state
Stage 3 of fight or flight response
-The stress hormone adrenaline is released from the adrenal medulla into the bloodstream
Stage 4 of fight or flight response
-The adrenaline triggers physiological changes in the body, creating physiological arousal necessary for the fight or flight response
Stage 5 of fight or flight response
-Once the threat has passed, the parasympathetic nervous system returns to its resting state
6 x effects on the body when a parasympathetic state changes to a sympathetic one
(Harry Rarely Breaks Dog People Slowly)
-Heart rate increases
-Breathing rate increases
-Saliva production inhibits
Recommended textbook explanations
Anatomy & Physiology Student Workbook
Kent Pryor, Richard Allan, Tracey Greenwood
Human Anatomy And Physiology
Elaine N. Marieb, Katja Hoehn
Anatomy and Physiology
The Human Body in Health & Disease
Gary A. Thibodeau, Kevin T. Patton
Sets found in the same folder
THE NERVOUS SYSTEM (Biopsychology)
SYNAPTIC TRANSMISSION (Biopsychology)
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