Skeletal Muscle System Sem 2

The functions of the muscular system are to maintain posture, create movement:

• Store energy and regulate body temperature

• Synthesize ATP and generate proteins

• Regulate temperature and water balance

• Stabilize joints and generate heat

The key characteristics of skeletal muscle include being excitable, contractile:

• Elastic and avascular

• Extensible and elastic

• Semi-rigid yet pliable

• Fibrous and disorganized

What is the name of the large central portion of a muscle?

• Aponeurosis

• Belly

• Fascicle

• Magnus

What is the function of a tendon?

• Stabilizing joints

• Increasing the force of contraction

• Connect muscles to bone

• Connect bone to bone

What fascial layer surrounds each skeletal muscle fiber?

• Epimysium

• Endomysium

• Perimysium

• Fibromysium

What fascial layer forms the outer envelope of the muscle and anchors it to the hypodermis?

• Extramysium

• Endomysium

• Perimysium

• Epimysium

Which muscle attachment is generally on the bone that moves during any motion?

• Proximal

• Origin

• Insertion

• Medial

Fascia is classified as what type of connective tissue?

• Organized fibrous

• Disorganized fibrous

• Areolar

• Disorganized cartilaginous

What connective element of skeletal muscle is described as the tenoperiosteal junction?

• The transitional tissue zone between the muscle and tendon

• The broad sheet of tissue that surrounds the muscle as a whole

• The fibrous connective tissue between the periosteum and tendon

• The point where epi-, peri-, and endomysium blend into a single fibrous cord

What portion of a muscle cell is the actual contractile unit?

• Myofiber

• Sarcoplasmic reticulum

• Sarcomere

• Myofibrils