Chapter 1: The Human Body: An Orientation

Question 1

Chemical level

Answer 1

Atoms combine together with matter to create molecules

Question 2

Cellular level

Answer 2

Cells are made up of molecules that contain similarly types of cells found in the _____ level

Question 3

Tissue level

Answer 3

Once formed together by the cells and molecules the ______ level is made up of numerous tissues

Question 4

Homeostasis

Answer 4

The process that maintains the stability of the human bodies internal environment in response to changes in external conditions

Question 5

Define anatomy and physiology and describe their subdivisions.

Answer 5

Anatomy: studies the structure of the body parts and their relationship to one another.

Physiology: functions the body, how the body works and carries out life-substaining activities.

Subdivision- both work together protecting the body, covering and fighting against harmful diseases ect.

Question 6

Negative feedback and mechanisms

Answer 6

Cause the variables to change in a direction OPPOSITE to that of the initial change, returning it to its “ideal” value; thus the name “negative” feedback mechanisms.

Question 7

Positive feedback mechanisms

Answer 7

The result or response enhances the original stimulus so that the response is accelerated.

The mechanism is positive because the change that results proceeds in the SAME direction as the initial change, causing the variable to deviate further and further from its original value or range

Question 8

Relationship between homeostatic imbalance and disease

Answer 8

Body’s control systems become less efficient and our internal environment becomes less and less stable

Increases our risk for illness and produce the changes we associate with aging