Human Anatomy Muscle Functions Quiz

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What is the action of the Frontalis muscle?

Closes jaw

Raises eyebrows (correct)

Head rotation

Smiling

Which muscle is primarily responsible for closing the mouth?

Zygomaticus Major

Orbicularis Oris (correct)

Temporalis

Masseter

Which muscle primarily extends the knee and has its insertion at the tibial tuberosity and patella?

Gastrocnemius

Sartorius

Gracilis

Vastus Medialis (correct)

Where does the Infraspinatus muscle originate?

Infraspinous fossa Signup and view all the answers

What action does the gracilis muscle perform?

Adduction of the thigh Signup and view all the answers

Which muscle is associated with head rotation?

Sternocleidomastoid Signup and view all the answers

What is the action of the gastrocnemius muscle?

Plantar flexion of the foot Signup and view all the answers

Which of the following muscles has its origin at the anterior superior iliac spine?

Sartorius Signup and view all the answers

What connective structure connects the Frontalis and Occipitalis muscles?

Aponeurosis Signup and view all the answers

The action associated with the Zygomaticus Major muscle is primarily for what?

Smiling Signup and view all the answers

What is the primary function of the vastus intermedius muscle?

Extends the knee Signup and view all the answers

Which muscle contributes to both plantar flexion and lateral stability of the foot?

Fibularis (Peroneus) Longus Signup and view all the answers

Which muscle is NOT included in the list of primary arm and forearm muscles?

Biceps Brachii Signup and view all the answers

From which point does the adductor longus muscle primarily act?

Pubis near pubic symphysis Signup and view all the answers

Which of the following muscles primarily closes the jaw?

Temporalis Signup and view all the answers

Where does the insertion of the vastus medialis occur?

Tibial tuberosity and patella Signup and view all the answers

What is the primary action of the Deltoid muscle?

Abduction of the arm Signup and view all the answers

Which muscle is responsible for the extension, adduction, and medial rotation of the arm?

Latissimus Dorsi Signup and view all the answers

What action is performed by the Serratus Anterior muscle?

Rotates the scapula upward Signup and view all the answers

Which action is associated with the Internal Intercostal muscles?

Exhalation Signup and view all the answers

What is the primary function of the Rectus Abdominis muscle?

Flexion and rotation of the lumbar spine Signup and view all the answers

The action of flexing the spine and compressing the abdominal wall is performed by which muscle?

External Oblique Signup and view all the answers

What is the origin of the Latissimus Dorsi muscle?

Spinous process of thoracic and lumbar vertebrae Signup and view all the answers

Which muscle assists with inhalation?

External Intercostal Signup and view all the answers

What is the primary action of the Flexor Digitorium Superficialis?

Flexes the wrist Signup and view all the answers

Which muscle is responsible for extending the wrist and originates from the lateral supracondylar ridge of the humerus?

Extensor Carpi Radialis Longus Signup and view all the answers

Which muscle action is not performed by muscles originating from the lateral epicondyle of the humerus?

Flexing the fingers Signup and view all the answers

What action is performed by the Pectoralis Major?

Adducts and medially rotates the arm Signup and view all the answers

Which structure serves as the continuous insertion for the Trapezius muscle?

Scapula spine Signup and view all the answers

Which of the following muscles does NOT act to flex the wrist?

Extensor Carpi Radialis Longus Signup and view all the answers

What distinct feature is associated with the Deltoid muscle?

Responsible for shoulder abduction Signup and view all the answers

The action of the Extensor Carpi Ulnaris is primarily to:

Extend the wrist Signup and view all the answers

What is the primary action of the gluteus maximus?

Extension of the thigh Signup and view all the answers

Which muscle is responsible for flexing the knee?

Semimembranosus Signup and view all the answers

Which of the following actions does the transversus abdominis perform?

Compresses the abdominal wall Signup and view all the answers

Which muscle's origin is the ischial tuberosity?

Semitendinosus Signup and view all the answers

What is the insertion point for the rectus femoris?