Muscles and Their Actions

Smooth muscle and cardiac muscle are considered _____ muscles because we can’t control them consciously.

• Immovable

• Involuntary

• Skeletal

• none of the above

What is labeled "4" (the blue/purple part) in the diagram?

• sarcolemma

• sarcoplasmic reticulum

• transverse tubules

• myofibril

____________ attaches to actin to form the cross bridge.

• Troponin

• Tropomyosin

• Myosin

• Calcium

Found in the heart

• smooth

• cardiac

• skeletal

• all

What are the 3 types of muscles?

• Skeletal, muscular, ligament

• Skeletal, smooth, cardiac

• Smooth, Cellular, Cerebrum

• Cardiac, smooth, brain stem

Tags

NGSS.MS-LS1-3

What is the name of this muscle and what are its actions?

• Gluteus maximus: hip flexion and internal rotation

• Gluteus medius; hip extension and external rotation

• Gluteus maximus; hip extension and external rotation

• Gluteus medius; hip flexion and internal rotation

Oliver, Emma, and Noah are studying for their physiology exam. They learned about a muscle that is responsible for the flexion of the forearm and supination of the hand. Can you help them identify this muscle?

• Brachialis

• Biceps Brachii

• Triceps Brachii

• Brachioradialis

Which of the following are actions of the tibialis anterior?

• Ankle dorsiflexion and inversion

• Ankle plantarflexion and inversion

• Knee flexion

• Ankle extension

The two antagonists of the tibialis anterior. Action: plantar flexion. (Select all)

• Gastrocnemius

• Soleus

• Vastus lateralis

• Fibularis Longus

Emma, Lily, and Aiden are studying for their anatomy exam. They come across a diagram of a muscle they can't identify. Can you help them name the muscle?

• Pectoralis Minor

• Upper trapezius

• Scalenes

• Sternocleidomastoid