Answer:
There are <em><u>four types of neuroglia</u></em> found within the central nervous system:
<u>Astrocytes</u> :
It maintains the blood brain barrier and preserve the chemical environment by recycling ions and neurotransmitters.
<u>Oligodendrocytes</u> :
The myelinate axons in the central nervous system and provide an overall structural framework.
<u>Ependymal cells</u> :
The line ventricles (brain) and central canal (spine) and are involved in the production of cerebrospinal fluid.
<u>Microglia</u> :
It removes cell debris, wastes and pathogens via phagocytosis.
The answer to this question should be A.
Alveoli small balloon-like structures which are responsible for the oxygen exchange in the lungs across the membranes. These are attached to the branches of the bronchial passages. These alveoli inflate and deflate with inhalation and exhalation. Answer is C.
Well we can eliminate B because it is a infectious deisease. A is wrong becuase it is not detected by lymph nodes. D is is not a form of cardiovascular disease an example of this would be TB(tuberculosis). The correct answer is C)it can be prevented with a vaccine.
Answer:
D.
Explanation:
Because we have no idea what this person's personal life is or his/her med history so it's safe to say that this person is just really hungry.