Exam 4 practice Flashcards
Which muscle cells are bifurcated in shape, short and striated?
Cardiac
Which function oof the muscle tissue describes walking?
Produces body movements
What is a thin connective tissue layer of collagen and reticular fibers that encases the individual muscle fibers inside each fascicle?
Endomysium
Which contractile protein is responsible for generating the force that will pull on cellular structures within the myofibril, resulting in shortening or muscle contraction?
Myosin
Which ions does the sodium-potassium pump move inside the cell?
Potassium
Where are calcium ions located during a muscular contraction?
In the sarcoplasm
Lactic acid that contributes to muscle fatigue results from the breakdown of the ….. during metabolism
Glucose
The small motor units in the muscle will have smaller,___ motor neurons that are ___ firing first to their skeletal muscle fibers, which also tend to be the smallest
Lower threshold, more excitable
____ fibers fatigue at a quicker rate
Glycolytic
What kind of changes are primarily triggered in the muscle in response to the resistance training?
Muscular hypertrophic
What is the insertion of the biceps brachial muscle?
Radius
In a group of muscles that create a movement, the___ stabilizes the bones and prevents unwanted movements
Fixator
According to the lever-fulcrum principle, muscles provide the___
Effort
Which muscle straightens the leg?
Rectus femoris
Which tongue muscle originates on the mandible and allows the tongue to move downward and forward?
Genioglossus
Which muscle depresses the mandible in addition to elevating and pulling the hyoid bone anteriorly?
Geniohyoid
Which of the following muscles are not a part of the abdominal muscles group?
Erector spinae
Which group of erector spinae muscles is localized intermediately?
Longissimus
Which muscle separates the thoracic and abdominal cavities and is dome shaped at rest?
Diaphragm
What is the condition in which the median nerve is compressed which can result in painful or numb sensations in the hand, loss of grip and strength in the hand, or a combination of those symptoms?
Carpal tunnel syndrome
Which muscle serves as a common site for intramuscular injection due to the thickness of the muscle reich blood supply which promotes faster absorption, and lack of major nerves and blood vessels within the belly of the muscle?
Gluteus medius
Which group of muscles is responsible for hip extension and knee flexion?
Hamstrings
Which muscle is found on the lateral surface of the tibia and produces dorsiflexion in addition to inversion?
Tibialis anterior
Which muscle cells are cylindrical in shape, long, and striated?
Skeletal
Which characteristic of the muscle tissue allows an electrical wave called an action to move along the entire length of the muscle cell resulting in muscle contraction?
Excitability
What is the rope shaped connective tissue that ties muscles to bone?
Tendon
What is the contractile unit of myofibrils?
Sarcomere
Which ions does the sodium-potassium pump move inside the cell?
Potassium
What happens after the voltage activated calcium gated channels open and calcium ions rush into the axon terminal?
Acetylcholine is released into the synaptic cleft
Which mechanism of the ATP production uses the breakdown of glucose or other nutrients in the presence of oxygen to produce carbon dioxide, water, and ATP?
Aerobic respiration
Which type of muscle fibers fatigue more quickly than the others because anaerobic glycolysis produces less ATP per glucose molecule than aerobic respiration?
Fast glycolytic fibers
What is the name of the age related muscular atrophy?
Sarcopenia
What is the insertion of the biceps brachial muscle?
Radius
In a group of muscles that create a movement, the ___ works together with the prime mover
Synergist
Which class of levers is used when raising yourself on your toes where the force is applied through the Achilles tendon in the heel?
Second class lever
What is the shape of the most skeletal muscles in the body?
Parallel
Which muscles fascicles run at an angle to the midline of the body?
Oblique
Which tongue muscle originates on the Styloid bone and allows upward and backward motion?
Styloglossus
Which muscle elevates the larynx’s thyroid cartilage?
Thyrohyoid
