WorksheetsMUSCLE
Total questions: 20
Worksheet time: 10mins
Function of muscle Spindle
For stretch reflex
Regulates muscle tone
Monitors length of muscle
All of the above
motor unit consist of
Motor neuron
nerve fibers that innervate skeletal muscle fibers
Muscle fibers it innervates
receptor field
Which type(s) of muscle tissue are involuntarily controlled?
Skeletal, Cardiac
Cardiac only
Smooth, Skeletal
Cardiac, Smooth
Muscle spindles are responsible for what?
stretch reflex only
contraction only
stretch reflex & sending info to spine about muscles
muscle relaxation
Golgi tendon organs
Relax action, opposite to muscle spindle reflex
Hold the action of the muscle, for stability
Support the muscle spindles
Sends excitatory info to the spinal cord
What are the 3 types of propriceptors?
Muscle neurons, Golgi tendon organs and Joint receptors
Muscle spindles, Gland tendon organs and Joint capsules
Muscle neurons, Gland tendon organs and Joint capsules
Muscle spindles, Golgi tendon organs and Joint receptors
What is shown in the colored part of this diagram?
a whole muscle
five muscle fibers
five muscle fascicles
five myofibrils
Name the following in order from largest to smallest:
muscle, muscle fascicle, muscle cell, myofibril, filaments
muscle, muscle fascicle, muscle cell, filaments, myofibril
muscle, muscle cell, muscle fascicle, myofibril, filaments
muscle, muscle cell, muscle fascicle, filaments, myofibril
What is the length between Z-lines of an actin molecule called?
fascicle
sarcomere
myosin binding site
sarcoplasmic length
____________ attaches to actin to form the cross bridge.
Troponin
Tropomyosin
Myosin
Calcium
The H zone changes size during a muscle contraction.
True
False
The actin is labeled here as _______.
AD
AC
BC
AB
The myosin is labeled here as _______.
BD
AC
BC
AB
A sarcomere is labeled here as _______.
BD
BC
AE
AB
What is released from the sarcoplasmic reticulum?
Inorganic phosphate
ADP
Calcium
ATP
What is the name of the neurotransmitter released at a neuromuscular junction?
Calcium
Acetylcholine
Dopamine
Troponin
