Podcast
Questions and Answers
The arm is defined as the area between the shoulder and the wrist.
The arm is defined as the area between the shoulder and the wrist.
False (B)
Flexion and extension occur at the elbow joint between the arm and forearm.
Flexion and extension occur at the elbow joint between the arm and forearm.
True (A)
The main arterial supply of the arm is provided by the femoral artery.
The main arterial supply of the arm is provided by the femoral artery.
False (B)
The radial artery is one of the terminal branches of the brachial artery.
The radial artery is one of the terminal branches of the brachial artery.
The biceps brachii is part of the anterior compartment of the arm.
The biceps brachii is part of the anterior compartment of the arm.
The profunda brachii artery accompanies the ulnar nerve along the radial groove.
The profunda brachii artery accompanies the ulnar nerve along the radial groove.
Veins of the arm can be classified only as deep veins.
Veins of the arm can be classified only as deep veins.
Triceps brachii is innervated by the Musculocutaneous nerve.
Triceps brachii is innervated by the Musculocutaneous nerve.
Flashcards
Humerus
Humerus
The humerus is a long bone that forms the skeletal framework of the arm, extending from the shoulder to the elbow.
Proximal end of the humerus
Proximal end of the humerus
The proximal end of the humerus is the upper part that connects to the shoulder joint. It includes features like the head, neck, and tubercles.
Shaft of the humerus
Shaft of the humerus
The shaft of the humerus is the main body of the bone, between the proximal and distal ends. It has various features like the deltoid tuberosity and radial groove.
Distal end of the humerus
Distal end of the humerus
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Brachialis muscle
Brachialis muscle
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Triceps brachii muscle
Triceps brachii muscle
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Brachial artery
Brachial artery
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Profunda brachii artery
Profunda brachii artery
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Study Notes
ANAT 201 ARM
- The arm is the area between the shoulder and elbow
- Flexion-extension and pronation-supination occur at the elbow joint
BONE: HUMERUS
- Proximal end:
- Head
- Anatomical neck
- Surgical neck
- Greater and Lesser Tubercules
- Intertubercular Sulcus
- Shaft:
- Deltoid tuberosity
- Radial groove
- Medial and Lateral supraepicondylar ridges
- Distal end:
- Trochlea
- Capitulum
- Medial Epicondyle
- Lateral Epicondyle
- Radial Fossa
- Coronoid Fossa
- Olecranon Fossa
MUSCLES OF THE ARM
- Muscles are divided into two compartments:
- Anterior (flexor) compartment, innervated by the Musculocutaneous nerve
- Brachialis
- Coracobrachialis
- Biceps brachii
- Posterior (extensor) compartment, innervated by the Radial nerve
- Triceps brachii
- Anconeus
- Anterior (flexor) compartment, innervated by the Musculocutaneous nerve
Arteries and Veins of the Arm
- Arteries:
- Brachial artery:
- The main artery of the arm.
- It lies anterior to the triceps and brachialis.
- It gives off the profundabrachii artery.
- It branches into ulnar and radial arteries.
- Profunda brachii artery:
- Largest branch of the brachial artery.
- It gives branches: middle collateral artery, radial collateral artery
- Enters the nutrient canal.
- Passes posterior to the medial epicondyle of humerus
- Superior and inferior ulnar collateral arteries
- Brachial artery:
- Veins:
- Superficial veins:
- Cephalic vein
- Basilic vein
- Deep veins:
- Brachial vein
- Accompanies the brachial artery
- Superficial veins:
- Veins join and become axillary vein
NERVES OF THE ARM
- Musculocutaneous nerve
- Radial nerve
- Median nerve
- Ulnar nerve
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Description
Test your knowledge on the anatomy of the arm including bones, muscles, and vascular structures. This quiz covers the humerus, muscle compartments, and their innervations. Understand the key anatomical components and their functions in the upper limb.
