Answer
It seems like you're referring to the arterial anatomy of the upper limb. The main artery that supplies blood to the upper limb is indeed known by different names along its course. Here's a breakdown of the artery and its branches:
1. **Subclavian Artery:** This is the initial segment of the artery that arises from the aorta. It runs beneath the clavicle (collarbone) and gives off various branches as it moves towards the upper limb.
2. **Axillary Artery:** As the subclavian artery crosses the outer border of the first rib, it becomes the axillary artery. The axillary artery is located within the axilla (armpit) region and continues downward.
3. **Brachial Artery:** The axillary artery continues into the upper arm and becomes the brachial artery. It's located in the upper arm and provides blood to the muscles of the arm.
**Branches of the Brachial Artery:**
- **Deep Brachial Artery (Profunda Brachii):** This is a branch of the brachial artery that travels posteriorly along the arm. It supplies the muscles of the posterior arm.
- **Superior Ulnar Collateral Artery:** This is another branch of the brachial artery that provides blood to the medial aspect of the arm, particularly around the elbow joint.
- **Radial Collateral Artery:** This artery is not directly a branch of the brachial artery, but it's worth noting. It's a small artery that runs alongside the radial nerve, which supplies the muscles of the forearm.
These arteries play a crucial role in delivering oxygenated blood to the muscles and tissues of the upper limb. They also contribute to collateral circulation, which ensures blood flow even if there's a blockage or constriction in one of the arteries.
Work Step by Step
It seems like you're referring to the arterial anatomy of the upper limb. The main artery that supplies blood to the upper limb is indeed known by different names along its course. Here's a breakdown of the artery and its branches:
1. **Subclavian Artery:** This is the initial segment of the artery that arises from the aorta. It runs beneath the clavicle (collarbone) and gives off various branches as it moves towards the upper limb.
2. **Axillary Artery:** As the subclavian artery crosses the outer border of the first rib, it becomes the axillary artery. The axillary artery is located within the axilla (armpit) region and continues downward.
3. **Brachial Artery:** The axillary artery continues into the upper arm and becomes the brachial artery. It's located in the upper arm and provides blood to the muscles of the arm.
**Branches of the Brachial Artery:**
- **Deep Brachial Artery (Profunda Brachii):** This is a branch of the brachial artery that travels posteriorly along the arm. It supplies the muscles of the posterior arm.
- **Superior Ulnar Collateral Artery:** This is another branch of the brachial artery that provides blood to the medial aspect of the arm, particularly around the elbow joint.
- **Radial Collateral Artery:** This artery is not directly a branch of the brachial artery, but it's worth noting. It's a small artery that runs alongside the radial nerve, which supplies the muscles of the forearm.
These arteries play a crucial role in delivering oxygenated blood to the muscles and tissues of the upper limb. They also contribute to collateral circulation, which ensures blood flow even if there's a blockage or constriction in one of the arteries.
