Which best describes the brain stem?
a- brain stem is found in the midbrain
b- brain stem controls critical thinking
c- brain stem controls blood circulation
d- brain stem regulated the release of hormones

Ans. Option C). 'brain stem controls blood circulation.'

Brain stem represents posterior part of the brain that plays role in various functions. In humans, brain stem consists hindbrain, pons, and midbrain.

One of the major function of brain stem is regulation of cardiovascular system (the system associated with blood circulation).

Thus., the correct answer is option C). 'brain stem controls blood circulation.'

haploid cells;

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.