Anatomy Quiz: Neck Muscles and Movements

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Which type of neck movement involves tilting the head backward?

Neck rotation

Neck flexion

Neck extension (correct)

Lateral neck flexion

When referring to unilateral muscle action, which statement is correct?

Unilateral actions are always associated with neck rotation.

Only the muscle on one side contracts. (correct)

It involves muscles of the trunk region only.

Both left and right muscles contract simultaneously.

What is the correct origin point of the sternal head of the sternocleidomastoid muscle?

Temporal bone

Mastoid process

Medial clavicle

Manubrium of sternum (correct)

Which of the following muscle regions is NOT part of the erector spinae group?

Transversus (A) Signup and view all the answers

Which of these statements about neck rotation is true?

It can be ipsilateral or contralateral. (D) Signup and view all the answers

Which of the following actions is classified as bilateral?

Contracting both muscles to tilt the head forward (B) Signup and view all the answers

What anatomical feature is associated with the insertion of the sternocleidomastoid muscle?

Mastoid process (B) Signup and view all the answers

Which muscle is specifically referred to for its role in neck flexion?

Sternocleidomastoid (A) Signup and view all the answers

What is the primary action of the subclavius muscle?

Stabilize the sternoclavicular joint (D) Signup and view all the answers

From which anatomical landmark do all muscles originating from the medial epicondyle of the humerus arise?

Medial epicondyle (A) Signup and view all the answers

Which structure is associated with the bicipital aponeurosis?

Radial tuberosity (A) Signup and view all the answers

What is NOT a function of the anconeus muscle?

Act as a flexor of the elbow (D) Signup and view all the answers

Which tubercle is located below the glenoid fossa?

Infraglenoid tubercle (A) Signup and view all the answers

Which bone feature does NOT articulate with the midshaft of the radius?

Olecranon (C) Signup and view all the answers

Identify the correct pairing of a muscle and its associated action.

Coracobrachialis - Flexion at the shoulder (A) Signup and view all the answers

What is the mistake often made regarding the functions of muscles originating from the medial epicondyle?

They are all extensors (D) Signup and view all the answers

What is the common origin for the muscles attached to the lateral epicondyle of the humerus?

Lateral supra-epicondylar line (A) Signup and view all the answers

Which joints are primarily involved in the movements of the fingers?

MCP and IP joint (C) Signup and view all the answers

What is the term used for the muscles that enable abduction at the dorsal side of the fingers?

DAB (D) Signup and view all the answers

Which structure separates the ulna from the radius along the forearm?

Interosseous membrane (D) Signup and view all the answers

The anatomical term 'hypothenar' refers to which part of the hand?

The little finger region (B) Signup and view all the answers

What is the primary role of the palmar interossei muscles?

Adducting the fingers (A) Signup and view all the answers

Which of the following phalanges is directly associated with the first metacarpal?

Proximal phalanx 1 (A) Signup and view all the answers

What does the acronym PAD stand for in relation to the muscular functions of the hand?

Palmar ADduction (B) Signup and view all the answers

Neck Extension

Movement of the head backward, where the chin points upwards.

Unilateral Muscle Action

Only one side of the muscle contracts, creating movement in a single direction.

Manubrium of Sternum

The top part of the breastbone, where the sternocleidomastoid muscle originates.

Erector Spinae Group

A group of back muscles responsible for spinal extension, rotation, and lateral flexion. The Transversus muscles are NOT part of this group.