Question

Innominate is
(a) A nerve
(b) An artery
(c) A vein
(d) Part of the skeleton and an artery

Answer 1

Hint: In innominate some bones as well as some arteries fused to form a support structure that does not have any particular name.

Complete Answer:
Innominate is a part of the skeleton as well as an artery also.
- Innominate bone: Hip bones are also known as innominate bones. They are fused bones of the pelvis present on either side of the sacrum. They are fused in the acetabulum and thus become the part of the appendicular skeleton. In the hip bone, the acetabulum is a deep cavity where the head of the femur, the thigh bone fits forming the hip joint.

- Innominate artery: Innominate artery is also known as the brachiocephalic artery. From the name, it is clear that the blood flows through this short artery to the arm (brachio) and the head (cephalic). This artery of the mediastinum supplies blood to the right arm and also to the head and neck.

Additional information:
- Nerve: In the peripheral nervous system (PNS) nerves are present as bundles of axons. It carries signals from the brain to the spinal cord and the rest of the body and vice versa.
- Artery: Arteries are muscular tubes lined by smooth tissue and have three layers. They carry oxygenated blood from the heart to the tissues of the body.
- Vein: Veins are the blood vessels that carry deoxygenated blood from the body (tissues) to the heart. Except the pulmonary and umbilical veins carry oxygenated blood from the liver to the heart.

So, the correct answer is ‘D’ part of the skeleton as well as an artery’.

Note:
- In the human body, the sciatic nerve is the largest and longest spinal nerve. This extends from the lumbar and sacral plexuses in the lower back and also runs through the buttocks and into the thighs.
- In an average lifespan of 75 years the heartbeats 2.5 billion times, with each beat, it expels two ounces of blood.
- The fused bones of the acetabulum are the ischium, pubis, and ilium.