Week 4 - QUIZZES
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A motor neuron and all the muscle fibers it stimulates form a…
motor unit
Excitability refers to the ability of a cell to…
respond to a stimulus by producing an electrical signal
Muscle contraction is triggered by impulses carried over…
motor neurons
Muscles generate heat, stabilize the body positions and..
produce body movements
Myofibrils are composed primarily of…
Actin and myosin
What properties of muscle tissue has its ability to generate tension to do work?
Contractility
The motor end plate is part of a…
Skeletal muscle cell at the synapse
Which type of muscle tissue is involuntary, slow in contracting, and able to regenerate considerably better than other types of muscle?
Smooth muscle
A muscle which functions as the prime mover is called a
Agonist
An adductor muscle…
Moves a part of the body toward the midline
Antagonistic muscle groups
Perform opposite functions
In order for skeletal muscles to cause movement they must…
cross at least one joint
One of the largest, heaviest muscles of the body which is the chief extensor of the femur is the
Gluteus maximus
The Achilles tendon attaches (inserts) on the
calcaneus
The hamstring muscles act to
flex the leg and extend the thigh
The masseter muscle is located in the
Head
The medial compartment of the thigh contains muscles that _______ the thigh.
Adduct
The preferred site of injection in the buttocks region is the
gluteus medius
The strength and stability of the shoulder joint is provided by the
muscles and tendons of the rotator cuff
Tendinitis of the tibialis anterior can result in a painful condition commonly known as
shinsplints
Which muscle flexes the vertebral column?
rectus abdominis
A bone which has an epiphysis at each end is a
Long bone
A callus is
a mass of repair tissue that bridges the ends of a broken bone
As epiphyseal cartilage cells stop dividing and are replaced by bone, the result is a bony structure called the
epiphyseal line