The blood vessels that carry blood to and from the head are thea)Iliac arteries and veins.b)Subclavian arteries and veinsc)Carotid arteries and jugular veinsd)Anterior (superior) and posterior (inferior) vena cavae.Correct answer is option 'C'. Can you explain this answer?

Question

Answer

Veins become larger as they get closer to the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart

Answer

Carotid arteries and jugular veins

The blood vessels that carry blood to and from the head are the carotid arteries and jugular veins. Here is an explanation of why this is the correct answer:

- Carotid Arteries: The carotid arteries are the major blood vessels that supply oxygenated blood to the head and neck. There are two carotid arteries in the human body - the right and left carotid arteries. They arise from the aorta and travel up the neck, supplying blood to the brain, face, and neck.

- Jugular Veins: The jugular veins are responsible for draining deoxygenated blood from the head and neck back to the heart. There are two jugular veins in the human body - the internal jugular vein and the external jugular vein. The internal jugular vein collects blood from the brain, face, and neck, while the external jugular vein collects blood from the scalp and muscles of the neck.

Together, the carotid arteries and jugular veins form a crucial part of the circulatory system that ensures proper blood flow to and from the head. They play a vital role in supplying oxygen and nutrients to the brain and removing waste products from its tissues.

Answer

Parasitism is a relationship between two living organisms of different species in which one organism called parasite obtains its food directly from another living organism called host. The parasite spends a part or whole of its life either on or inside the body of the host. The general parasitic adaptations are (i) anaerobic respiration in internal parasites, (ii) loss of certain organs, (iii) presence of adhesive organs, (iv) excessive multiplication, (v) resistant cysts and eggs for safe transfer of their progeny to new hosts and (vi) well developed and complicated reproductive organs.

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