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WorksheetsUnit 3 Review Lectures 1 & 2
Total questions: 20
Worksheet time: 11mins
Which tissue shown below is skeletal tissue?
Muscle tissue 1
Muscle tissue 2
Muscle tissue 3
The heads of myosin myofilaments are called ___ when they link the thick and thin filaments together.
Acetylcholine
ATP
Cross bridges
Neuromuscular Junction
Skeletal muscle has 3 functions: mobility, posture & heat productions. Posture is thanks to ___.
Muscle tone
You sitting up right
Muscles contracting & relaxing
Exercise
What types of tissue make up skeletal muscle?
muscle, connective, nervous
muscle, connective, nervous, epithelial
muscle, connective
muscle
Where will you find fascia connective tissue?
surrounding whole muscles
surrounding muscle fibers
surrounding fascicles
Fascia tapers off at the ends of skeletal muscles to form ___ which connects the skeletal muscle to a bone.
tendon
ligament
endomysium
perimysium
Between fascia & the skeletal muscle, you will find a layer of ____.
Epimysium
Endomysium
Perimysium
___ is a type of connective tissue which can be found wrapped around fascicles.
perimysium
endomysium
epimysium
Which of the following occurs when ATP binds to the myosin head?
Myosin head change to low energy configuration
Myosin head detach from actin
Myosin head undergoes power stroke
Myosin head forms cross bridge
Fascicles are bundles of ____.
muscle fibers (cells)
endomysium
myofilaments
myofibril
The outer cell membrane of a muscle cell/muscle fiber/myofiber is called
sarcolemma
sarcomere
sarcoplasm
sarcoplasmic reticulum
The gap between the motor neuron and the muscle fiber it supplies at the neuromuscular junction is called the
H band
Z zone
Synaptic Cleft
Sarcomere
Contractions are generated by
shortening of thick filaments
sliding of thin filaments past thick filaments
shortening of thin filaments
"accordian-like" folding of thick and thin filaments
letter ___ would be found in a muscle like your latissimus dorsi, a large muscle on your back which makes imprecise movements
A
C
B
Which of the following correctly describes the events that happen directly after acetylcholine binds to the motor end plate?
The action potential travels through the T-Tubules triggering the sarcoplasmic reticulum to release calcium
The myosin binds to the actin pulling the z-lines closer together
Sodium and potassium move through the sarcolemma
The synaptic vesicles release ACh out of the axon terminal and into the synaptic cleft
which of the following occur during muscle relaxation
Release of calcium from sarcoplasmic reticulum
Acetyl choline released into synapse
ATP binds to myosin head
Tropomyosin covers myosin binding site
No cross bridge formation
Which of the following statements is true?
A motor neuron can attach to MANY muscle fibers
A motor neuron can only attach to ONE muscle fiber
A muscle fiber can attach to MANY motor neurons
Each muscle fiber has MANY motor end plates
Which of the following are the regulatory protein in muscle contraction?
Sarcoplasmic Reticulum
Troponin
Actin
Tropomyosin
Myosin
Use the image to determine the purpose of calcium:
causes ATP binding to actin
increases the action potential along the sarcolemma
binds to proteins on myosin
triggers the binding of actin and myosin
Which choice below covers the actin and prevents the myosin head to attach to the actin
Tropomyosin
Calcium and Oxygen
Myosin and Actin
Glycogen and Hemoglobin
