How is the brain organized, and what do its higher structures do?

The brain is composed of the cerebrum, cerebellum, and brainstem (Fig. 1). Figure 1. The brain has three main parts: the cerebrum, cerebellum and brainstem. Cerebrum: is the largest part of the brain and is composed of right and left hemispheres. The frontal lobe is responsible for initiating and coordinating motor movements; higher cognitive skills, such as problem solving, thinking, planning, and organizing; and for many aspects of personality and emotional makeup. The parietal lobe is involved with sensory processes, attention, and language.

Explanation:

answer; polycythemia is the correct answer;

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.