Final answer:
The process involving planning, controlling, leading, and organizing in healthcare is management, and the group leadership style with top-down communication is authoritarian.
Step-by-step explanation:
The process of planning, controlling, leading, and organizing the activities of a healthcare organization or department within an organization is described as management. Management involves setting the strategy and coordinating the efforts of employees to achieve objectives through the application of available resources, such as financial, natural, technological, and human resources.
In the context of group leadership within an organization, the leadership style where the communication pattern flows from the top down is referred to as authoritarian. This type of leadership involves a single leader or a group of leaders who make decisions and dictate policies without input from group members. The authoritarian style is characterized by strict control over all decisions and little input from group participants.