In humans only _ systemic arch is present.
Correct answer: A. Left
- A. Left
- B. Superior
- C. Right
- D. Both A and B
Explanation
Yes, only the left systemic arch is present in humans. The systemic arch is a large blood vessel that carries oxygenated blood from the heart to the rest of the body. In humans, the left systemic arch arises from the base of the aorta, just behind the left atrium. It then curves over the left bronchus and descends to the abdomen, where it branches into the common carotid and subclavian arteries. The superior systemic arch is located on the left side of the heart and supplies blood to the head, neck, and upper limbs.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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