Animal Responses Flashcards
Different types of motor nervous system
Autonomic
Somatic
What is the autonomic nervous system
Non conscious activity
What are the two types of autonomic responses
Sympathetic and parasympathetic
Somatic nervous system
Conscious activity
Connects to muscles
Sympathetic vs parasympathetic nervous system
Sympathetic prepares for activity
Parasympathetic prepares for rest
Neurotransmitter for sympathetic
Noradrenaline
Neurotransmitter for parasympathetic
Acetylcholine
Effects of sympathetic nervous system
Increases heart rate
Increases ventilation of lungs
Dilated pupils
Decreases digestion
What nerve increases heart rate
Acceleans
Modulates activity of SAN
What nerve decreases heart rate
Vagus
Role of the cerebrum
Controls conscious thought
Role of cardiovascular centre of medulla oblongata
Decides whether to send messages via accelerants or vagus
Role of cerebellum
Controls balance and fine control of movement
How does the hypothalamus control the release of Cortisol
Releases CRH, causes pituitary gland release ACTH
Which travels to adrenal cortex to release cortisol
How does hypothalamus control release of thyroxine
Releases TRH , causes pituitary to release TSH, causes release of thyroxine
what is the role of the t tubule
carries action potential to the muscle fibre
what are the muscle types
-striated
-smooth
-cardiac
what is the functional unit of the muscle
sarcomere
how does an action potential catalyse the contraction of a muscle
AP moves down T tubule
AP spreads to terminal cisternae of sarcoplasmic reticulum
-calcium is released into muscle fibre
what is the i band of the sarcomere
only actin
from z line to myosin (+ actin)
what is the i band of the sarcomere
only actin
from z line to myosin (+actin)
what is the H zone
just myosin
from actin to actin
what is the A band
myosin + actin
what is the m line
middle of sarcomere
