Fibers and Attachments
What attaches muscles to bone
tendons
The muscle group targeted during overhead press is:
shoulders
Group of diseases that cause progressive weakness and loss of muscle mass
Muscular dystrophy
The muscular system is a(n) _________ system
organ
True or false:
When a sensory neuron stimulates a muscle fiber, overlapping thick and thin filaments slide along one another and sarcomeres shorten.
False; motor neuron
Fill in the blank:
A. _____ are fatigue resistant, and focused on sustained, smaller movements and postural control.
B. ____ are provide bigger and more powerful forces, but for shorter durations and fatigue quickly
A. slow-twitch muscle fibers
B. fast-twitch muscle fibers
What is the best exercise to build muscle in the thighs?
Squats
A condition in which the tissue connecting muscle to bone becomes inflamed.
Tendinitis
Where is cardiac muscle found
heart
The pectoralis muscle originates in the sternum and inserts in the
These fibers contract relatively slowly and use aerobic respiration (oxygen and glucose) to produce ATP. They produce low power contractions over long periods and are slow to fatigue.
slow oxidative fibers
What is the best exercise to build muscle in the arms?
Bicep curls
What is an autoimmune condition that damages the muscle innervation and causes degeneration of the muscle over time
Myasthenia gravis
What are the types of muscles?
skeletal. smooth, and cardiac
These are the thin and thick filaments that slide in order for muscles to contract
actin and myosin
These fibers have fast contractions and primarily use aerobic respiration, but because they may switch to anaerobic respiration (glycolysis)
fast oxidative fibers
This is one of the most popular exercises to build muscular endurance
Planks
What is the most common cause of a charley horse
Overuse without proper resting of the muscle
ie: cramps
These muscles are controlled by the autonomic muscle system and are involuntary
smooth muscle
The smallest muscles in the body are contained:
In the middle ear (Stapedius muscle)
These fibers have fast contractions and primarily use anaerobic glycolysis. These fibers fatigue more quickly than the others
Fast glycolytic fibers
Which muscle group is targeted during these exercises:
Deadlifts. Pull-ups/ Chin-ups.
the back is targeted
A progressive nervous system disease that affects nerve cells in the brain and spinal cord, causing loss of muscle control.
Amyotrophic Lateral Sclerosis
These muscles are striated in appearance and are under voluntary control
Skeletal Muscle
First step of a muscle contraction where:
An action potential triggers acetylcholine into the motor end plate to start depolarization in the sarcolemma and causes the sarcoplasmic reticulum to release calcium ions
Depolarization and Calcium Ion Release