WorksheetsSkeletal Muscle Anatomy
Total questions: 25
Worksheet time: 25mins
Which membrane binds many fascicles together and covers the entire muscle?
Endomysium
Epimysium
Perimysium
What is the scientific name for a muscle fiber bundle?
Tendon
Ligament
Fascicle
Perimysium
Which label is pointing to the epimysium?
A
B
C
D
Which label is pointing to the perimysium?
A
B
C
D
Actin or mysoin containing structure.
Tendon
myofilament
myofibril
Fiber
Point of origin refers to .......
the place where the muscles attach to the bone, but no movement occurs
the place where the muscles attach the and movement occurs
where a muscle attaches to another muscle
the membrane the covers and supports muscles
Which of the following muscles has it's name derived from it's origin and insertion?
Sternocleidomastoid
Triceps brachii
Gracilis
Diaphragm
Thin filaments in a myofibril are
Sarcomeres
Sarcoplasm
Actin
Myosin
Which of the following muscles has it's name derived from the direction of fibers.
Rectus abdominus
Pectoralis Minor
Sternocleidomastoid
Masseter
Which of the following membranes covers the fascicle?
Epimysium
Perimysium
Endomysium
Submysium
Which muscle is deepest?
Sartorius
Rectus Femoris
Vastus Intermedius
Articularis Genu
The thin filament is composed of:
Myosin
Actin
Which label is pointing to the endomysium?
A
B
C
D
The point at which the nerve cell reaches the sarcolemma of the muscle fiber is the _____.
Neurotransmitter
Acetylcholine
Synaptic cleft
Neuromuscular Junction
One neuron and all the skeletal muscle cells it stimulates is the ____ ___.
Neurotransmitter
Neuromuscular junction
Motor unit
Synaptic cleft
The gap between the nerve cell and sarcolemma is the ____ ___.
Synaptic cleft
Neurotransmitter
Motor unit
Neuromuscular junction
Once ACh binds to receptor cells on the sarcolemma, what takes place?
Sarcolemma becomes temporarily permeable to sodium.
The muscle contracts.
Calcium is pumped into the axon terminal.
Synaptic vesicles move to the end of the terminal.
Once sodium is pumped into the sarcolemma, what happens?
Action potential is transferred to the sarcolemma to cause contraction.
The process ends and ACh breaks down.
Calcium is pumped into the axon terminal.
ACh is released into the synaptic cleft.
The neuromuscular junction is created when the nerve cell reaches the ___.
Sarcomere
Sarcoplasmic reticulum
Sarcolemma
Myofibril
Which type of muscle is voluntary and striated?
Cardiac
Smooth
Skeletal
What is the name of the connective tissue sheath that surrounds each muscle fiber?
Endomysium
Epimysium
Perimysium
What is the primary function of skeletal muscles in the human body?
A) To pump blood throughout the body
B) To facilitate movement by contracting and relaxing
C) To produce hormones
D) To store calcium
Which of the following structures is responsible for the striated appearance of skeletal muscle fibers?
A) Sarcomeres
B) Mitochondria
C) Nuclei
D) Endoplasmic reticulum
During muscle contraction, which ion is released from the sarcoplasmic reticulum to initiate the process?
A) Sodium (Na+)
B) Potassium (K+)
C) Calcium (Ca2+)
D) Chloride (Cl-)
What is the role of the neuromuscular junction in skeletal muscle function?
A) It stores energy for muscle contraction
B) It transmits signals from the nervous system to the muscle fiber
C) It provides nutrients to the muscle
D) It removes waste products from the muscle
