Animal responses Flashcards
(14 cards)
What are the 2 main types of nervous system?
CNS and PNS
How is the PNS divided?
The Somatic nervous system - voluntary movement
Autonomic nervous system - involuntary movement
How is the Autonomic nervous system divided?
Sympathetic - makes involuntary actions more active
Parasympathetic - Makes involuntary actions less active
What does the Cerebrum (la) do?
Controls voluntary actions such as thought and speech
What does the Cerebellum do?
(mindful zen)
Controls involuntary movements and balance of the body
What does the hypothalamus (endocrine gland) do? Norman
Thermo and Osmoregulation
What does the Posterior Pituitary gland do?
Stores and releases hormones from the hypothalamus E.g ADH
What does the Anterior Pituitary gland do?
Produces and releases hormones E.g FSH
What does the Medulla oblongata do?
Regulates functions of the automatic nervous system E.g Heart and breathing rate
How does the Hypothalamus Coordinate the endocrine and nervous system for the fight or flight response? (Adrenal and sympathetic) (Big)
-The Adrenal-cortical system
The hypothalamus releases a peptide hormone which stims the pituitary gland to release ACTH which stims the adrenal cortex to release cortisol
-Sympathetic nervous system
Send an impulse down the SNS to the adrenal glands caausing the medulla to release Nora/Adrenaline which acts as a Non-steroid hormone (2nd messenger model)
What happens when blood PH is too Low?
This is detected by Chemoreceptors which sends an impulse to the acceletory centre of the medulla oblongata which sends impulses down the sympathetic nervous system to the SAN.
The result of this is that heart rate is up and more CO2 is exhaled so Ph back to normal
What happens when blood pressure is too Low?
This is detected by Baroreceptors which sends an impulse to the acceletory centre of the medulla oblongata which sends an impulse down the sympathetic nervous system to the SAN.
This increases heart rate which increases blood pressure back to normal
What happens when blood PH is too High?
This is detected by chemoreceptors which sends an impulse to the inhibitory centre of the medulla oblongata which sends impulses down the parasympathetic nervous system to the SAN.
This decreases heart rate and the rate of CO2 exhaled rising PH back
What happens when blood PH is too High?
This is detected by Baroreceptors which sends an impulse to the inhibitory centre of the medulla oblongata which sends impulses down the parasympathetic nervous system to the SAN.
This decreases heart rate and thus blood pressure.
