Muscle Fibers
This is a dense connective tissue connecting spindle-shaped or pennate muscles to bone.
Tendinous attachment
A site of injections that can accommodate large volumes of fluid/medication.
Superficial Fascia (subcutis/hypodermis)
Which component of the thin filament is inhibitory and binds to actin?
I unit of troponin
This blocks the active sites of actin molecules.
Tropomyosin
This drug is used for short-term MSK pain. It is commonly used for managing spasms associated with IVDD.
methocarbamol
This muscle arrangement produces more strength force but has limited range of motion.
Pennate arrangement
This structure serves to reduce friction. Found where muscles/tendons/ligaments glide over bone
Synovial Bursae
Which component of a muscle fiber must experience an action potential for the skeletal muscle to contract?
sarcolemma
Calcium binds to ______ to activate ______ to move.
Troponin (C subunit); tropomyosin
This drug reverses the effects of non-depolarizing agents. It is known as a selective relaxant binding agent.
Sugammadex
This type of muscle fiber is fast, easily fatigued, and is poor in myoglobin.
Type 2
What types of bone function to protect tendons?
Where is calcium stored in a muscle cell?
sarcoplasmic reticulum
What breaks the attachment of myosin to actin to repeat cross-bridge cycle?
ATP
Mivacurium is a short-acting neuromuscular blocker. What metabolizes it?
plasma cholinesterase
What is the prime mover (agonist) of elbow flexion?
biceps brachii
This surrounds and breaks muscles into groups. Muscles may attach here.
Deep fascia
What neurotransmitter binds to a sodium ligand-gated channel on the motor neuron end plate to contract skeletal muscle?
acetylcholine (ACh)
Which component of the sarcomere does not change in length during muscle contraction?
A band
This drug is appropriate for hepatic or renal insufficiency patients. It has a dose-dependent onset of action.
atracurium
What type of metabolism do Type 1 muscle fibers utilize?
aerobic metabolism
This term refers to accumulation of fat in cells in superficial fascia. Specifically present in pigs.
Panniculus Adiposus
Increasing what is the key to couple the excitation process to the muscle contraction process?
calcium
Name the 4 stages of cross-bridge cycling.
2. Myosin heads bind to actin
3. Power stroke occurs
4. ATP breaks attachment of myosin to actin (repeat cycle)
Name 2 indications for neuromuscular blockers.
1. Adjunct to GA (relax muscles)
2. Used with sedative/hypnotic agents for mechanical ventilation
3. Aids in ET tube intubation
4. For balanced anesthesia technique (decrease amount of anesthetic)