Chapter 10-11 : Muscles

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100

A specialized smooth and interconnecting tubules surround each myofibril

Sarcoplasmic reticulum

200

Gap of axon terminal & sarcollema

synaptic cleft

300

Enumerate 4 Properties of Muscle Tissue

Contractibility, Excitability, Extensibility, and Elasticity.

400

Thin filaments in a sarcomere

Actin

500

Gross Anatomy of a Skeletal Muscle starting from the smallest unit with the connective tissue surrounding it.

Myofibril - Muscle Fiber (Endomysium) - Muscle Fascicle (Perimysium)- Skeletal Muscle Bundle (Epimysium)

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100

Plasma membrane of muscle cells

Sarcolemma

200

What is the term for muscle wasting?

Sarcopenia

300

Functions of Muscle Tissue

Produce movement, Open and close body passageways, Maintain posture and stabilize joints, and Heat generation. 

400

A neurotransmitter to innervate a skeletal muscle

Acetylcholine

500

Explain Sliding Filament Mechanism. What happens to the parts of a sarcomere?

When a muscle contracts, H zone disappears, Z-discs move closer to each other, I-band shortens, and A-band remains the same. 

10-11

100

Bundle of skeletal muscles and its fibers is called a _____

Fascicle

200

A type of skeletal muscle fiber that depends on anaerobic pathways and contracts fast

Fast glycolytic fibers

300

Functional contractile unit of skeletal muscle tissue

sarcomere

400

Spring-like molecule that resists overstretching in myofibrils

Titin

500

Types of Fascicle Arrangement

Circular, Convergent, Parallel (Fusiform), Pennates (Uni, Bi, Multi)

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100

Most common type of lever in skeletal muscles

Third-class lever

200

Facial muscle that is involved in moving the jaws

Masseter

300

The most important muscle of respiration

Diaphragm 

400

Term for the muscle actions that has major responsibility for a certain movement

Prime mover

500

Muscle that crosses on the anterior side produces _____, while on the posterior side produces _____

Flexion, Extension

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100

Term used for a muscle that opposes or reverses a movement

Antagonist

200

Muscle that is involved in the compression of cheeks

Buccinator muscles

300

Muscle that is connected to the hyoid bone and sternum

sternohyoid

400

Naming the Skeletal Muscles

Location, Shape, Relative size, Direction of fascicles and muscle fibers, Location of attachments, Number of origins and Action

500

A muscle that crosses on the lateral side produces ______, while on the medial side produces ______

abduction, adduction