Podcast
Questions and Answers
Which muscles are primarily responsible for flexing the elbow joint?
Which muscles are primarily responsible for flexing the elbow joint?
- Triceps brachii
- Brachioradialis (correct)
- Anconeus
- Brachialis (correct)
Which structure forms the roof of the cubital fossa?
Which structure forms the roof of the cubital fossa?
- Biceps brachii
- Cubital fascia (correct)
- Pronator teres
- Brachialis
What arteries are included in the contents of the cubital fossa?
What arteries are included in the contents of the cubital fossa?
- Subclavian artery
- Radial artery (correct)
- Ulnar artery (correct)
- Brachial artery (correct)
Which nerve is located centrally within the cubital fossa?
Which nerve is located centrally within the cubital fossa?
Which muscle is primarily involved in the medial rotation of the shoulder joint?
Which muscle is primarily involved in the medial rotation of the shoulder joint?
Identify the main muscle involved in the extension of the elbow joint.
Identify the main muscle involved in the extension of the elbow joint.
Which of the following muscles is not involved in shoulder abduction?
Which of the following muscles is not involved in shoulder abduction?
What is the role of the supinator muscle in relation to the elbow joint?
What is the role of the supinator muscle in relation to the elbow joint?
Which muscles contribute to the extension of the elbow joint?
Which muscles contribute to the extension of the elbow joint?
What is the primary function of the bicipital aponeurosis within the cubital fossa?
What is the primary function of the bicipital aponeurosis within the cubital fossa?
Which of the following muscles is NOT involved in flexion of the elbow joint?
Which of the following muscles is NOT involved in flexion of the elbow joint?
Which nerve, when divided into branches, is located laterally in the cubital fossa?
Which nerve, when divided into branches, is located laterally in the cubital fossa?
Which group of muscles is primarily involved in medial rotation of the shoulder joint?
Which group of muscles is primarily involved in medial rotation of the shoulder joint?
Which pathway does the radial artery follow after its division in the cubital fossa?
Which pathway does the radial artery follow after its division in the cubital fossa?
Which structure primarily contributes to the floor of the cubital fossa?
Which structure primarily contributes to the floor of the cubital fossa?
Which of the following muscles acts as an abductor of the shoulder joint?
Which of the following muscles acts as an abductor of the shoulder joint?
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Study Notes
Cubital Fossa
-
Boundaries consist of:
- Lateral: Defined by the brachioradialis muscle
- Medial: Formed by the pronator teres muscle
- Floor: Composed of the brachialis and supinator muscles
- Roof: Covered by the cubital fascia and bicipital aponeurosis
-
Contents include:
- Nerves:
- Median nerve: Located centrally in the cubital fossa
- Radial nerve: Divides into superficial and deep branches, found in the lateral part of the cubital fossa
- Vessels:
- Brachial artery splits into radial and ulnar arteries
- Brachial veins accompany the arteries
- Presence of cubital lymph nodes and superficial veins
- Nerves:
Muscles Influencing Movements at the Shoulder Joint
-
Flexion:
- Pectoralis major
- Anterior part of the deltoid
- Coracobrachialis
- Short head of biceps brachii
-
Extension:
- Posterior part of the deltoid
- Latissimus dorsi
- Teres major
- Long head of triceps brachii
-
Abduction:
- Middle part of deltoid
- Supraspinatus
- Long head of biceps brachii
-
Adduction:
- Pectoralis major
- Latissimus dorsi
- Subscapularis
- Infraspinatus
- Teres minor
-
Medial Rotation:
- Pectoralis major
- Latissimus dorsi
- Subscapularis
- Anterior part of deltoid
- Teres major
-
Lateral Rotation:
- Infraspinatus
- Teres minor
- Posterior part of deltoid
Muscles Influencing Movements of the Elbow Joint
-
Flexion:
- Biceps brachii
- Brachialis
- Brachioradialis
- Pronator teres
-
Extension:
- Triceps brachii
- Anconeus
Cubital Fossa
-
Boundaries consist of:
- Lateral: Defined by the brachioradialis muscle
- Medial: Formed by the pronator teres muscle
- Floor: Composed of the brachialis and supinator muscles
- Roof: Covered by the cubital fascia and bicipital aponeurosis
-
Contents include:
- Nerves:
- Median nerve: Located centrally in the cubital fossa
- Radial nerve: Divides into superficial and deep branches, found in the lateral part of the cubital fossa
- Vessels:
- Brachial artery splits into radial and ulnar arteries
- Brachial veins accompany the arteries
- Presence of cubital lymph nodes and superficial veins
- Nerves:
Muscles Influencing Movements at the Shoulder Joint
-
Flexion:
- Pectoralis major
- Anterior part of the deltoid
- Coracobrachialis
- Short head of biceps brachii
-
Extension:
- Posterior part of the deltoid
- Latissimus dorsi
- Teres major
- Long head of triceps brachii
-
Abduction:
- Middle part of deltoid
- Supraspinatus
- Long head of biceps brachii
-
Adduction:
- Pectoralis major
- Latissimus dorsi
- Subscapularis
- Infraspinatus
- Teres minor
-
Medial Rotation:
- Pectoralis major
- Latissimus dorsi
- Subscapularis
- Anterior part of deltoid
- Teres major
-
Lateral Rotation:
- Infraspinatus
- Teres minor
- Posterior part of deltoid
Muscles Influencing Movements of the Elbow Joint
-
Flexion:
- Biceps brachii
- Brachialis
- Brachioradialis
- Pronator teres
-
Extension:
- Triceps brachii
- Anconeus
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