Functions & Junctions
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Under the Microscope
Movement Roles
Prime Functions
100

This function is how we get around.

What is movement?

100

The type of fibrous connective tissue that makes up fascia.

What is disorganized?

100

It is the plasma membrane of a muscle fiber.

What is a sarcolemma?

100

The term for a muscle that contributes the most to a specific movement.

What is the agonist or prime mover?

100

It is the most superficial prime mover for the elbow flexion.

What is the biceps brachii?

200

This function keeps us upright.

What is posture?

200
A cord of organized fibrous connective tissue that attaches muscle to bone.

What is a tendon?

200

It is the ER of a muscle fiber.

What is the sarcoplasmic reticulum?

200

These muscles assist the prime mover(s).

What are synergists?

200

This is the prime function of the flexor carpi radialis.

What is wrist flexion?

300

This by-product of contraction is important during winter.

What is heat?

300

The connective tissue covering a muscle fascicle.

What is the perimysium?

300

It is the thick myofilament.

What is myosin?

300

Muscles in this role act as a brake to control the motion.

What are antagonists?

300

Both the gastrocnemius and soleus are prime movers for this action.

What is plantar flexion?

400

The junction where skeletal muscle turns into fibrous connective tissue.

What is the musculotendinous junction?

400

The corkscrew-shaped protein molecules that make up collagen.

What is tropocollagen?

400

This is the zigzagged border between two sarcomeres.

What is the Z line?

400

The subclavius and subscapularis play this role during shoulder flexion and extension.

What are fixators or stabilizers?

400

The prime functions for this muscle are shoulder abduction, flexion and extension.

What is the deltoid?

500

The anatomic name for the junction between skeletal muscles and bone.

What is the tenoperiosteal junction?

500

A flat sheet of connective tissue that attached muscle to bone.

What is an aponeurosis?

500

The dark area of the sarcomere is called this.

What is the A brand?

500

The type of contraction used by the antagonist.

What is an eccentric contraction?

500

This trunk muscle serves as a prime mover in both hip and trunk flexion.

What is the iliopsoas?