Introduction to Muscular System

When a muscle contracts, it _______

• gets longer

• gets shorter

• gets thinner

• grows hair

Tags

NGSS.MS-LS1-3

What muscle is highlighted?

• Triceps

• Biceps

• Quads

• Deltoids

What muscles is highlighted?

• Deltoid

• Trapezius

• Tricep

• Pectoralis

What muscle is highlighted?

• Hamstrings

• Quads

• Calves

• Gluteus

Where in the body is smooth muscle found?

• feet

• triceps

• stomach

• deltoids

The neuron and the collection of muscle fibers it innervates is called the:

• neural impulse.

• motor neuron.

• muscle fiber.

• motor unit.

Chest and shoulder muscles that move the arm at the shoulder joint have insertions on the:

• humerus.

• scapula.

• clavicle and ribs.

• radius or ulna.

Which of the following muscles is not part of the quadriceps group?

• semitendinosus

• rectus femoris

• vastus lateralis

• vastus medialis

Which muscle is #6?

• Rectus abdominus

• gastrocnemius

• deltoids

• Brachioradialis

The functional unit of the muscle cell is the: 

• Sarcomere

• Osteon

• Myofilament

• Muscle fiber