Show:
Muscle Contraction
Muscle Anatomy
Muscle Misc
100
ADP molecules on the surface of actin serve as active sites for the formation of cross bridges with molecules of
What is Myosin
100
The point of contact between a nerve cell and muscle cell is called the _________
What is neuromuscular junction
100
Which of the following is NOT a characteristic used to name skeletal muscles? 1.thickness of fibers, 2.location, 3.size of muscle, 4.number of origins
What is 1.thickness of fibers
200
Rigor mortis that occurs in skeletal muscles a few hours after death is due to
What is lack of ATP, which prevents muscle relaxation.
200
Several muscle fibers and one motor neuron describes a
What is a motor unit
200
Myofibrils are composed primarily of
What is actin and myosin
300
The muscle that does most of the work for a particular movement is called the:
What is the agonist
300
A unit within a myofibril best describes this
What is a sacromere
300
The botulinus toxin that causes botulism acts by preventing the release of
What is acetylcholine
400
The section of a myofibril that extends from one Z line to the next is called a________
What is a sacromere.
400
The membranous network of channels and tubules within a muscle fiber is known as the ____________
What is sarcoplasmic reticulum
400
The structures that are unique to cardiac muscle
What is intercalated discs
500
The two types of muscle that involuntarily contract
What is smooth & cardiac muscles
500
The outer sheath of connective tissue surrounding a skeletal muscle is the _______
What is epimysium
500
The muscle forming the rounded contour of the shoulder.
What is the Deltoid