Chapter 7 Muscular system
Starations are found in
Cardiac muscle
If an injury caused damage to the insertion of the biceps brachii muscles, the injury would be nearest to
Elbow
Sternocleidomastoid
Head and neck
The attachment point to the bone that moves during muscle contraction
Insertion
Another name for smooth muscle is
Involuntary muscle
A muscle contraction in which the muscle tenses but does not shorten
Isometric
The muscle contracts but does not shorten, even though an increase in muscle tension does occur. This sentence describes what type of contractions
Isometric contractions
A type of muscle contraction in which the muscle shortens and the joint moves
Isotonic
The muscle contracts and shortens and the insertion end moves toward the point of origin. This sentence describes what type of contractions
Isotonic contractions
Biceps Femoris
Lower
Gastrocnemius
Lower
Sartorius
Lower
A single motor neuron with all the muscle cells it controls/innervates is called a
Motor unit
A single motor neuron with all the muscle cells it innervates
Motor unit
Pectoralis major
Moves the upper extremities
What does the sarcolemma surrounded
Muscle fibers
What are tonic contractions
Muscles don't shorten
Movement around a longitudinal axis is
Rotation
Basic contractile unit of a skeletal muscle is the
Sarcomere
Another name for voluntary muscle
Skeletal muscle
Another name for visceral muscle
Smooth muscle
If a prime mover flexes a joint
The antagonist will extend the joint
To produce smooth movement at s joint
The prime mover and synergists must contract
Which of the following muscle is not a muscle that moves the lower extremities
Trapezius
External oblique
Trunk of body
Rectus abdominis
Trunk of body
Deltoid
Upper
Masseter
Upper
Zygomaticus
Upper
Another name for skeletal muscle is
Voluntary muscle
The term that refers to ankle and foot movement is
Dorsiflexion
Thick myofilament
Myosin
The point of contact between the nerve ending and the muscle fiber
Neuromuscular junction
Opposite of rotation is
None of these
The attachment point to the bone that is stationary during contraction
Origin
The muscle attachment to the more stationary bone is called the
Origin
Opposite of dorsiflexion
Plantar flexion
Which of the following muscles is NOT a muscle that moves the upper extremities
Rectus abdominis
The hand position when the body is in anatomical position is
Supination
A bursa is a saclike structure which is filled with
Synovial fluid
What must be present in order for the myosin to release off of the actin after a contraction
ATP
Thin myofilament
Actin
What chemical is found in the axon terminal of the neuromuscular junction
Acytelcholine
TOWARDS the midline of the body
Adduction
According to the steps of contraction, in order for a sarcomere to contract
All of the above
AWAY from the midline of the body
Abduction
A fluid-filled sac that acts as a lubricantng structure for muscle movement is a
Bursa
What allows you to lift different weights with the same muscle is
The difference in the threshold stimulus
