Human Anatomy and Physiology Chapter 10: The Muscular System

These flashcards cover key concepts related to the muscular system, including muscle structure, attachment, classification, and function.

Skeletal muscle moves bones at joints by __________.

contracting and relaxing.

The two points of muscle attachment to bone or connective tissue are __________ and __________.

origin; insertion.

The __________ moves towards the origin during muscle contraction.

insertion

Muscle fibers are organized into __________, which represent bundles of muscle fibers.

fascicles.

Muscles only __________, they never push.

pull.

The __________ is the major force for producing a specific movement.

agonist or prime mover.

The __________ opposes or reverses a particular movement.

antagonist.

Muscles that add force to a movement and reduce undesirable or unnecessary movement are called __________.

synergists.

Muscle classification based on the direction of muscle fibers includes terms such as __________, __________, and __________.

rectus; oblique; transverse.

Muscle names can indicate __________, __________, or __________ of the muscle.

function; location; shape.

The muscle that elevates the eyebrow is called __________.

frontalis.

The muscle that depresses the mandible is __________.

platysma.

The __________ is the primary muscle responsible for the flexion of the forearm.

biceps brachii.

The muscle that extends the knee is __________.

quadriceps.

The muscle located in the posterior aspect of the lower leg that flexes the foot is __________.

gastrocnemius.

The __________ muscle is responsible for the abduction of the arm.

deltoid.

The term __________ refers to a muscle that adducts a body part.

adductor.

The __________ is the least movable end of the muscle.

origin.

The muscle that compresses the abdomen is __________.

transverse abdominis.

When the muscle fibers are arranged in a circular pattern, it is referred to as __________.

orbicularis.

The muscle that draws the scapula forward is called __________.

serratus anterior.