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Anatomy Ch9

QuestionAnswer
Which bone is controlled by the muscles of mastication? Mandible
The shrinkage of muscles from disease is called? Atrophy
Which term is used to describe muscle pain? Myalgia
Muscles that are attached to the bones are called? Skeletal muscles
Which term describes the part of a skeletal muscle that is attached to a fixed structure or bone? Origin
There are how many types of muscles? 3
Which muscle extends the femur and rotates it outward? Gluteus Maximus
A motor neuron plus all the muscle fibers it stimulates is called a Motor unit
Which muscle is used to control breathing? Diaphragm
What is a form of rheumatism that causes chronic muscle pain? Fibromyalgia
Which muscle raises the eyebrows and wrinkles the skin of the forehead? Frontalis
The neurotransmitter released by axon terminals near muscle cells is? Acetylcholine
Myofibrils have dark bands known as A bands, composed of the protein? Myosin
The more fixed attachment of a muscle that serves as a basis for the action is the? Origin
The main muscle that close your jaw by bringing up the mandible in a bite grip are the masseter and the? Temporalis
Lou Gehrig’s disease is also known as? Amyotrophic lateral sclerosis
Surrounding the actin myofilaments are two inhibitors substances: troponin and Tropomyosin
The release of what ions from the sarcoplasmic reticulum inhibits the activity of troponin Calcium
Electrically polarized cell membrane Sarcolemma
membrane around the muscle cell Endomysium
Skeletal muscle bundles Fasciculi
Individual bundles of muscle cells or fibers Fascicles
Layer of contractive tissue Perimysium
Course irregular connective tissue Epimysium
Layer of areolar tissue Fascia
Thick filament of protein Myosin
Dark band A Band
Thin filament of protein Actin
Light band I Band
Dark straining band shaped like a Z Z line
Slightly darker section in the middle of the dark A Band H Band
Area between two adjacent Z lines. Sarcomere
Membrane in the form of vesicles and tubules Sarcotubular system
Muscle cells are also called Fibers
Created by: CindyS77
 

 



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