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Muscular system

Stack #184377 test 4

QuestionAnswer
Two Characteristics of skeletal muscle function largely under voluntary controlproduces body heat
Endomysseium surrounds a muscle fiber
Fascia separates muscles
The region of the sarcomere which has actin and no myosin is known as the I band
Troponin has Three subunits, high affinity for calcium ions, high affinity for tropomyosin, and a high affinity for actin
The Z-disc is located in the middle of the I-band
The sarcoplasmic reticulum stores calcium ions
An action potential is produced when Na ions enter the sarcolemma causing depolarization
Curare, a toxin, binds to the acetylcholine receptors at the motor end plate. This would result in inability of the muscle to respond to stimuli from the nerve (i.e. paralysis)
An eneergy storage medium in muscle is creatine phosphate
An aerobic resperation yields two ATP per molecule of glucose metabolized
In an isotonic contraction, the muscle changes in lingth and moves the load
The site of calcium regulation in smooth muscle is calmodulin
4 aerobic respiration characteristics are occurs in smaller red muscle fibers (slow-twitch fibers)yields as much as 36 ATP per glucose molecule metabolizedOccurs only if sufficient amounts of oxygen are presentforms ATP in the resting muscle
Recovery from oxygen debt includes an elevated aerobic metabolismreserves of creatine phosphate replenishedlactic acid converted to glucosean increase in heart rate and rate of breathing
glycolytic (fast acting) muscle fibers fatigue easier
Intense exercise that results in a great deal of anaerobic activity increases muscle mass
Muscle hypertrophy results from increased size of individual muscle fibers
Atrophy results when a limb is immobilized for a long period of time such as in a cast
A muscle sphincter orbicularis oris
Flexing the forearn by the biceps brachii represents a class III lever system
Some muscles that are named for their size vastus medialis, adductor longusgluteus maximusadductor brevis
right sternocleidomastoid muscle would pull the head towards the right
The "boxer's muscle" serratus anterior
The muscles responsible for closing the mouth masseter and temporalis
Damage to the coccygeus would result in a decreased support for the pelvic viscera
coraco brachaialis is not part of the rotator cuff
Extension of the forearm is accomplished by the triceps brachii
a powerful muscle that flexes the wrist is the flexor carpi radialis
Three muscles most commonly used for injection sights deltoid, gluteus medius, vastus lateralis
What muscles make up the quadriceps femoris group rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
The hamstring muscle group is composed of the biceps femoris, flexor digitorum longus,simimembranosussemitendinosus
What muscles are connected to the calcaneus via the calcaneal (Achilles) tendon gastrocnemius, soleus
The structural and functional unit of the skeletal muscle darcomere
the cytoplasm of muscle cells sarcoplasm
found in cardiac muscle intercalated discs
the cell membrane of a muscle fiber sarcolemma
Releases calsium when an action potential is produced on the muscle cell's plasma membrane sarcoplasmic reticulum
The end of the muscle that is attached to the more stationary of the two bones that it connects is called the origin
In muscle action the skeletal muscle meurotransmitter released into synaptic cleft is acetylcholine
a broad muscle of the back which insert on the intertubercular groove of the humerus is the latissima dorsi
a muscle working in opposition to another muscle is a/an antagonist
the muscle that plays the major role in accomplishing the desired movement prime mover
a muscle which is the prime mover of arm extension is the larissimus dorsi
what muscle has its origin on the lateral condyle and upper 2/3 of the tibia and ists insertion on the first metatarsal and first cuneiform of the 1st metatarsal dorsiflexes the foot is the tibialis anterior
which muscle raises the shoulders and also hyperextends the head trapezius
Created by: abuzz_lite