Increased rigidity of muscle after death due to cross-bridge formation between actin and myosit as calcium ions leak from the sarcoplamic reticulum.
(hint: RM, death)
Summation of the local potential that results when two or more action potentials arrive at a single synapse in rapid succession.
(hint: TS, side of head, addition)
Enlarged end of the sarcoplasmic reticulum in the area of the T tubules.
(hint: TC, deadly cancer, sister)
Sum of active and passive tension
(hint: TT, __ body workout, stressed)
Tubule that extends from the sarcolemma to a myofibril of striated muscle.
(hint TT, not reverse, T____)
Two terminal cisternae and a T Tubule between them.
(hint: T, Three)
Relating to the internal organs.
(hint: V, Cereal)
Delicate membranelike structure found at either end of a sarcomere to which the actin myofilaments attach.
(hint ZD, computer___)
Fatigue due to a depletion of ATP within the muscle fibers.
(hint: MF, term in definition)
One of the three phases of muscle contraction; time between the application of the stimulus and the beginning of muscular contraction. Also called the latent phase.
(hint: LP, rhymes with Bag, 2nd part in definition)
Shallow invagination in the membranes of smooth muscle cells that may perform a function similar to both the T Tubules and sarcoplasmic reticulum of skeletal muscle.
(hint C, bears live in what?)
Fine connective tissue sheath surrounding a muscle fiber.
(hint: E, into)
Tension applied to a load by a muscle without contracting; produced when an external force stretches the muscle.
(hint: PT, throw the ball or ___, stressed)
Temporary inability of a muscle to either contract or relax because of a depletion of ATP so that active transport of calcium ions into the sarcoplasmic reticulum cannot occur.
(hint: PC, mental, baby on the way)
Refers to the membrane of a nerve, muscle, or gland that is in close association with a presynaptic terminal. The postsynaptic membrane has receptor molecules within it that bind to neurotransmitter molecules.
(hint: P, Post office)
Functional membrane-to-membrane contact of a nerve cell with another nerve cell, muscle cell, gland cell, or sensory receptor; functions i the transmission of action potentials from one cell to another.
(hint: S, take a nap)
Area between the ends of two adjacent myosin myofilaments within a myofibril; z disk divides the I band into two equal parts.
(hint: IB, term in definition)
Fibrous protein found as a component of the actin myofilament.
(hint: T, Troop)
Cytoplasm of a muscle fiber, excluding the myofilaments.
(hint: S, sarcasm)
Stimulus of greater magnitude than a maximal stimulus; however, the frequency of action potentials is not increased above that produced by a maximal stimulus
(hint: SS, super, most of the term in definition)
Globular protein component of the actin myofilament.
(hint: T, troop nine)
Stimulation of a muscle fiber produces an action potential that results in contraction of the muscle fiber.
(hint: E-CC, superhappy, baby is coming, a pair)
Stimulus resulting in a local potential just large enough to reach threshold and produce an action potential.
(hint: TS, term is in definition)
Series of successively stronger contractions that occur when a rested muscle fiber receives closely spaced stimuli of the same strength but with a sufficient stimulus interval to allow complete relaxation of the fiber between stimuli.
(hint: T, Trip---treat)
Fibrous sheath enveloping a bundle of skeletal muscle fibers (muscle fascicle).
(hint: P, cody)
Thin myofilament within the sarcomere; composed of two F actin molecules, tropomyosin, and troponin molecules.
(hint: AM, in definition)
Value of the membrane potential of which an action potential is produced as a result of depolarization in response to a stimulus.
(hint: TP, hold, in definition)
Loose areoloar connective tissue found beneath the skin (hypodermis) or dense connective tissue that encloses and separates muscles.
(hint: F, face)
See Lag Phase
Globular protein molecules that, when bound together, form fibrous actin (F actin).
(hint: GA, world, in definition)
(hint: MF, in definition, clothes)
Fibrous actin molecule that is composed of a series of globular actin molecules (G Actin)
(hint FA, in definition)
Thick myofilament of muscle fibrils; composed of myosin molecules.
(hint: MM, in definition)
Fatigue caused by the central nervous system.
(hint: PF, thinking I'm tired)
Period characterized by a reduced capacity to do work.
(hint: F, tired)
Contraction of a whole muscle in response to a stimulus that causes an action potential in one or more muscle fibers.
(hint: MT, not bone but__, witch)
Enzyme found in the synaptic cleft that causes the breakdown of acetylcholine to acetic acid and choline, thus limiting the stimulatory effect of acetylcholine.
(hint: A, LOOOng word, part of it in definition)
Electric charge difference inside a cell membrane, measured relative to just outside the cell membrane.
(hint RMP, bed, insane in the __, possible)
RESTING MEMBRANE POTENTIAL
One of the three phases of muscle contraction; the time during which tension is produced by the contraction of muscle.
(hint: CP, term in definition)
When a stimulus is applied to a cell, an action postential is either produced or not. In muscle cells the cell either contracts to the maximum extent possible (for a given condition) or does not contract.
( hint: AON, texas holdem)
Muscle contraction in which the length of the muscle does not change but the tension produced increases.
(hint: IC, alone, baby on way)
Enlarged axon terminal or terminal bouton.
(hint: PT, before, deadly cancer)
Plasma membrane of a muscle fiber.
(hint: S, deep sleep)
Part of a myofibril between adjacent Z disks.
(hint: S, sarcasim)
Line in the center of the H zone made of delicate filaments that holds the myosin myofilaments in place in the sarcomere of muscle fibers.
(hint ML, Part in definition)
Endoplasmic reticulum of muscle.
(hint SR, look at the definition)
Stimulus resulting in a local potential so small that it does not reach threshold and produce an action potential.
(hint SS, teacher is sick, ___package)
Length of the myosin myofilament in a sarcomere.
(hint AB, I want to play guitar in __ ____)
Extremely fine molecular thread helping to form the myofibrils of muscle; thick myofilaments are formed of myosin, and think myofilaments are formed of actin.
(hint: M, in definition)
Space between the presynaptic and the postsynaptic membranes.
(hint: SC, first part in definintion, not right but)
Tension produced by the contraction of a muscle.
(hint: AT, sexually ___, stressed)
Fibrous envelope surrounding a skeletal muscle.
(hint: E, Pima)
Area in the center of the A band in which there are no actin myofilaments; contains only myosin.
(hint: HZ, end)
Neuron that innervates skeletal; smooth, or cardiac muscle fibers.
(hint: MN, make a car go, axon)
Increased force of contraction of a muscle due to increased frequency of stimulation.
(hint: MWS, no division but.., bye, total)
MULTIPLE WAVE SUMMATION
Phase of muscle contraction following the contraction phase; the time from maximal tension production until tension decreases to its resting level.
(hint: RP, not working but..., 2nd part in definition)
Fatigue due to depletion of neurotransmitter vesicles in the presynaptic terminals.
(hint: SF, both words in definition)
Change in membrane potential in an excitable tissue that acts as an electric signal and is propagated in an all-or-none fashion.
(hint: AP, toys: __figures, 2nd part in definition)
Stimulus resulting in a local potential just large enough to produce the maximum frequency of action potentials.
(hint: MS, highest you can go, 2nd part in definition)
Relatively constant tension produced by a muscle for long periods as a result of asynchronous contraction of motor units.
(hint: MT, attached to bone, I want my body to be..)
Primitive multinucleated cell with the potential of developing into a muscle fiber.
(hint: M, mine----produce)
Change in the electric charge difference across the cell membrane that causes the difference to be smaller or closer to O MV; phase of the action potential in which the membrane potential moves toward zero, or becomes positive.
(hint: D, move away)
Increased force of contraction of a muscle due to recruitment of motor units.
(hint: MMUS, not division, makes car run, one, total)
MULTIPLE MOTOR UNIT SUMMATION
Specialized synapse between a motor neuron and a muscle fiber.
(hint: NJ, axon--attached to bones, Grand)
Any specific chemical agent released by a presynaptic cell on excitation that crosses the synaptic cleft and stimulates or inhibits the postsynaptic cell.
(hint: N, axon---transformers)
Oxygen necessary for the synthesis of the ATP required to remove lactic acid produced by anaerobic respiration.
(hint OD, breath, owe on credit card)
Phase of the action potential in which the membrane potential moves from its maximum degree of depolarization toward the value of the resting membrane potential.
(hint: R, opposite in definition)
Striped, marked by stripes or bands.
(hint S, look at definition, looks of a muscle)
Secretory vesicle in the presynaptic terminal containing neurotransmitter substances.
(hint: SV, 1st part in a word in the definition, 2nd part in the definition)
Band or bundle of nerve or muscle fibers bound together by connective tissue.
(hint: F, face)
Single neuron and the muscle fibers it innervates.
(hint: MU, makes a car run, one)
Tubelike invagination of the sarcolemma that conducts action potentials toward the center of they cylindrical muscle fibers.
(hint: TT, 2nd part-gotta take a bath in what?)
Relating to the internal organs.
Shallow invagination in the membranes of smooth muscle cells that may perform a function similar to both the T tubules and sarcoplasmic reticulum of skeletal muscle.