WorksheetsExercise Physiology - Nervous System
Total questions: 16
Worksheet time: 9mins
What is a motor unit
a single motor neuron and the muscle fibers that it innervates
a single muscle fiber that is innervated
a neuromuscular junction and the muscle fibers
a single motor neuron on its own
What is the neurotransmitter that is released in the neuromuscular junction
adrenaline
acetylcholine
lactic acid
Cortisol
How do muscle spindles prevent injury (pick 2)
detect length of muscle fibres
send signal to reduce stretch
stops the muscle contracting
makes the muscle more elastic
What do chemoreceptors detect
blood pressure
heart rate
blood pH
body temperature
What do baroreceptors detect
blood pressure
heart rate
blood pH
body temperature
What do thermoreceptors detect
blood pressure
heart rate
blood pH
body temperature
Chemoreceptors are located where
carotid artery and aorta
blood vessels supplying the heart
on the skin surface
in the medulla
Baroreceptors are located where
carotid artery and aorta
blood vessels supplying the heart
on the skin surface
in the medulla
Thermoreceptors are located where
carotid artery and aorta
blood vessels supplying the heart
on the skin surface
in the medulla
Which motor units are required when lifting light weights
small motor units
medium motor units
large motor units
no motor units
What does a motor nueron do?
transfer an electrical signal to the fibre
send signals back to the brain
open the veins
prevent signals being sent
Sensory nerves do what
send signals to the brain
send signals to the muscles
send signals to the skin
send signals to the sino atrial node
motor nerves do what
send signals from the senses to the brain
send signals from the brain to the muscles
send signals to the skin
send signals to the sino atrial node
Function of muscle Spindle (pick 2)
For stretch reflex
to spin around
monitors length of muscle
to measure tension
Function of muscle Golgi tendon
For stretch reflex
to spin around
monitors length of muscle
to measure tension
how does the nervous system increases motor unit recruitment (pick 2)
increase frequency of stimulation/signal
increase number of tendons
increase number of motor neuron activation
increase the muscle spindles
