51 notecards = 13 pages (4 cards per page)
serves as the actual "trigger" for muscle contraction by removing theinhibition of the toponin molecules
a neurotransmitter released at motor end plates by the axon terminal
diffusion across the cell membrane results in depolarization
used to convert ADP to ATP by transfer of a high-energy phosphate group. A reserve high-energy compound
muscle that opposes and reverses the action of another muscle
muscle that stabilizes the origin of another muscle
muscle that is primarily responsible for bringing about a particular movement
muscle that aids another by promoting the same movement
which muscle cells have the greatest ability to regenerate?
most skeletal muscles contain _______
a mixture of fiber types
stores oxygen in muscle cells
What structure in skeletal muscle cells functions in calcium storage?
creatine phosphate functions in the muscle cell by ______
storing energy that will be transferred to ADP to resynthesize ATP
The major function of the sarcoplasmic reticulum in muscle contraction is to ______
regulate intracellular calcium concentration
During muscle contraction, myosin cross bridges attach to which active sites?
rigor mortis occurs because _____
no ATP is available to release attached actin and myosin molecules
During vigorous exercise, there may be insufficient oxygen available to completely break down pyruvic acid for energy. As a result, the pyruvic acid is converted to ______
what is the main factor that determines the power of a muscle?
the total number of muscle cells available for contraction
When the term biceps, triceps, or quadriceps forms part of a muscle's name, what does it tell you about the muscle?
the muscle is able to change direction twice, three times, or four times faster that other muscles, respectively.
the names of muscles often indicate the action of the muscle. What does the term levator mean?
the muscle elevates
Which of the following describes the suprahyoid muscles?
they are a group of muscles that lie superior to the hyoid bone and help form the floor of the oral cavity
which of the following muscles inserts by the calcaneal tendon?
a muscle that opposes, or reverses, a particular movement is a ______
what are the ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?
which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle?
The period after an inital stimulus when a neuron is not sensitive to another stimulus is the _____
absolute refractory period
the part of a neuron that conducts impulses away from its cell body is called a ____
an impulse form one nerve cell is communicated to another nerve cell via the _____
collections of nerve cell bodies outside the central nervous system are called
the substance released at axon terminals to propagate a nervous impulse is called a
only _____ muscle cells are always multinucleated
the end of the muscle that typically moves when a muscle contracts is called the _____
the time in which cross bridges are active is called the period of _____
only _____ muscle cells commonly branch
WHat is a muscle spasm?
The _____ is the main chewing muscle
The abnormal protrusion of the small intestine through a weak point in the muscle of the abdominal wall is called a _______
That part of the nervious system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the ______ nervous system
neuroglia found in the CNS that bind axons and blood vessels to each other are called ______
When information is delivered with the CNS simultaneously by different parts of the neural pathway, the process is called _____ processing
connective tissue sheath surrounding individual muscle fibers
bundle of muscle cells surrounded by a perimysium
connective tissue covering the exterior of a muscle organ
conncetive tissue surrounding muscle fiber bundles
individual muscle fiber