Trunk flexion

Adducts, medially rotates and extends the arm at the shoulder joint.

Elevates and retracts the scapula

As a group these muscles extend the knee

Adduction, flexion and internal rotation of the arm. Stabilizes the shoulder and assist in breathing

Flexion of the elbow

trunk rotation, lateral flexion, abdominal compression, stabilization, assist in forced expiration

abduction, flexion, ,internal and external rotation, and stabilizes the shoulder to help prevent dislocations

Elevates the mandible closing the mouth

flexes the hip and knee

extends the hip joint

Knee extension

Dorsiflexion and inversion of the ankle joint

Which muscle group flexes the knee joint?

Plantarflexion of the ankle

Knee extension, patella tracking, adduction

Knee extension, hip flexion, patella stabilization

Knee extension, hip flexion

Knee flexion, hip extension

Enables breathing by contracting and relaxing rhythmically

Extension of the elbow

Flexion and rotation of the Neck

Knee flexion hip extension

knee extension, hip flexion

Skeletal muscle is:

Skeletal Muscle has ______nuclei.

Skeletal muscle is:

Has a centrally located nucleus

Found inside organs

This muscle contracts slowly

Which myofilament shortens when a sarcomere contracts?

Which myofilament is thick?

Which myofilament has many heads to grab the other one?

Which myofilament is attached to the Z line?

Which myofilament has tropomyosin on it?

Which myofilament has troponin on it?

Which myofilament is powered by ATP?

Which myofilament has two regulatory proteins on it?

Which regulatory protein blocks myosin-binding sites on actin?

Which regulatory protein blocks actin-binding sites on myosin?

Which regulatory protein has a binding site for calcium ions?

Which regulatory protein stiffens actin so that it can resist tension?

Which regulatory protein has 3 binding sites?

Which regulatory protein can move the other one?

What happens when calcium binds to troponin?

Once the myosin-binding sites are uncovered, what does myosin need in order to power it to cock up and bind?

With ATP and calcium present, what is able to happen?

With ATP and calcium absent, what happens?

Why does the sarcomere relax when calcium is absent?

What is the smallest unit of a muscle to contract?

Which myofilament is thin?

Which myofilament is thick?

Which part of a sarcomere contains only thin filaments?

Which part of a sarcomere is the wall between two different sarcomeres?

Which part of a sarcomere contains BOTH actin and myosin myofilaments?

Which part of the sarcomere is the line down the middle of the myosin?

Which myofilament pulls the other one when a muscle contracts?

Connects muscle to bone

Connective tissue sheath that surrounds the entire muscle

Bundle of muscle fibers

Connective tissue sheath that surrounds each fascicle

Connective tissue sheath that surrounds each muscle fiber

Plasma membrane that around each muscle fiber

Long proteins that make up each muscle fiber

Contacting unit of the muscle

What is a crossbridge?

What does calcium do to the actin?

What is the name of the protein that covers the binding sites on actin?

What does the sarcoplasmic reticulum do?

What is the name of the place where a nerve meets a muscle fiber

How does the sarcomere shorten (contract) ?

What two chemicals are necessary for muscle contraction to occur?

Skeletal Muscle contraction is initiated when the ________ sends a message to the muscle cell.

The neurotransmitter that signals muscle contraction is...

Which of the following statements correctly explains the sliding filament model?

Abduction

Movement of a limb toward the midline

Lack of muscle coordination during voluntary movements

Circular movement at the distal end of a limb

Moving the foot up toward the ankle

Turning the palm or sole of the foot downward

Abnormally increased muscle function or activity

Partial contraction of a muscle; firmness

Greater than normal growth

Limp or without muscle tone

A loss of muscle bulk in one or more muscles

A general term for muscle disease

Cordlike, band of nonelastic fibrous connective tissue that attaches a muscle to a bone

Fibrous band that connects bone to bone

Sheet of connective tissue that acts as a muscle attachment

Inflammation of a tendon

Chronic injury to a tendon

Pain in one or more muscles

Pain located at specific points in the body; along with widespread pain in the body

The most important muscle that causes a movement; prime mover

Muscle attachment at the immovable bone

Muscle attachment to the movable bone

Cooperating action of certain muscles

Opposite motion of the agonist - example biceps flex and the triceps extend

A lack of coordination of a muscle during movement, particularly gait(how you walk)

Bending a joint to decrease the angle of a joint

Straightening a joint to increase the angle of a joint

Moving a body part toward the midline of the body

The rotation is a single spinning movement around a fixed axis

A progressive, genetic muscle disorder that primarily affects boys

A common over use injury of the lower extremity commonly called shin splints

An injury to a ligament

An injury to a muscle

Characterized by stretched ligaments and mild pain

Partial tear of ligaments, Moderate pain and swelling, Significant limitation of range of motion

Complete tear of ligaments, Severe pain and swelling, Inability to bear weight, and May require surgery. 

Minimal pain and swelling, Stretching of muscle fibers without tearing, and Full range of motion with slight discomfort. 

Moderate pain and swelling, Partial tearing of muscle fibers, and Decreased range of motion and strength.

Severe pain and swelling, Complete rupture of muscle fibers, Significant loss of range of motion and strength, and May require surgery. 

Which statement best describes one main function of the muscular system?

Which of the following is a function of the muscular system?