Types of Muscles
Which type of muscle tissue is striated and under voluntary control?
Skeletal Muscle
Muscles must be stimulated by something in order to contract. This statement represents which characteristic of muscle tissue?
Excitability or Irritability
What muscle is responsible for flexion at the elbow?
Biceps Brachii
Which condition is caused by the overstretching of a muscle or tendon?
Strain
What is the primary function of cardiac muscle?
Causing the heart to beat and pump blood throughout the body.
Which type of nerve cell stimulates a muscle fiber to contract?
Motor Neuron
Which muscle group is primarily involved in extending the leg at the knee?
Quadriceps Femoris
Overexertion of a muscle, poor circulation, electrolyte imbalances and dehydration may all lead to which muscle condition?
Muscle Spasms
Which muscles arelocated on the lateral sides of the trunk and functions to twist the trunk, rotate the spine, and pull the chest downward?
Obliques
Which type of muscle tissue is responsible for peristalsis?
Smooth/Visceral Muscle
Which neurotransmitter causes the change in the permeablity of the cell membrane on the muscle fiber, which is needed for muscle contraction?
Acetylcholine
Which arm muscle is primarily responsible for the abduction of the arm?
What is the exact cause of fibromyalgia?
The cause is unknown.
A severe tightening of a flexor muscle that results in the bending of a joint due to lack of use is known as a(n)___________.
Contracture
What does cardiac muscle have that enables the muscle fibers to all contract simultaneously?
Intercalated Disks
When the cell membrane on muscle fiber changes permeability and sodium enters the muscle fiber, this causes which ion to be released?
Calcium
Which muscle connect the zygomatic bone to the mandible and enables chewing?
Masseter
Which condition is inherited and characterized by the progressive weakness of skeletal muscles due to the death of muscle fibers?
Muscular Dystrophy
The part of the muscle that does not move during contraction is known as the ______.
Origin
Which type of skeletal muscle tissue can work for long periods of time without running out of energy?
Actin and Myosin connect and slide over top of each other, resulting in muscle contraction.
Which muscle allows for plantar flexion and flexion of the leg at the knee?
Gastrocnemius
Which autoimmune condition occurs when nerve impulses are not properly transmitted to muscles because acetylcholine receptors on the muscle are blocked by antibodies?
Myasthenia Gravis
The flat, sheetlike connective tissue that covers the muscle and gives the muscle stability is known as __________.
Aponeurosis