Blood flows to the brain through the arteries and away from the brain through the vein. a. internal carotid and vertebral; jugular b. jugular and vertebral; external carotid c. jugular and vertebral; internal carotid d. choroid plexus; arachnoid villi e. external carotid and vertebral; jugular

The correct answer is option a. internal carotid and vertebral; jugular

Explanation:

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The internal and external carotid arteries carry blood between the head and neck, the difference is that one carries blood to the brain and the other to other parts of the head.

The internal carotid artery is the one that carries blood to the brain. Blood moves away from the brain through the jugular vein.

We can conclude that the correct answer is option a. internal carotid and vertebral; jugular

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: