Muscle

This muscle crosses the legs over one another (8)

• sartorius

• hamstrings

• Forman's crossorius

• extensor carpi radialis

This muscle elevates the mandible (5)

• frontalis

• zygomaticus

• platysma

• masseter

This muscle extends the elbow (6)

• triceps

• biceps

• latissimus dorsi

• external oblique

Tags

NGSS.MS-LS1-3

This muscle rotates the thigh (1)

• gluteus maximus

• gluteus minimus

• quadriceps

• hamstrings

This is what connects the gastrocnemius to the calcaneous bone (6)

• gastrocnemius

• calcaneous

• achilles tendon

• forman's ligament

This muscle moves the hips forward (10)

• gluteus maximus

• hippus forwardus

• quadriceps group

• gluteus minimus

What does the myosin do to the actin?

• Nothing

• Pushes on it

• Pulls on it

• Breaks it into pieces

How does the sarcomere shorten (contract) ?

• The myosin filaments contract

• The actin filaments contract

• The myosin is pulled by the actin

• The actin is pulled by the myosin

When a muscle is in a contracted position, what is the relationship between actin filaments?

• They are on top of one another

• They are beside each other

• They are close to each other

• They are far apart from each other

What is the structure that stores calcium in the muscle cell?

• Sarcoplasmic reticulum

• Myoglobin

• Neuron

• Neuromuscular junction