Unit 1 A&P 1

Homeostasis is the condition in which the body maintains

A dynamic state of equilibrium

Which two organ systems include the pancreas as a component?

Digestive an endocrine systems

In directional terms the elbow is to the shoulder

Distal

Which of the following is controlled by a positive feedback mechanism?

Enhancement of uterine Contractions by oxytocin during childbirth

Dr. Mitchell performs open heart surgery the incision he makes through the sternal region of his patient divides the thoracic cavity into equal right in left parts the incision must be a long a:

Mid sagittal (median) plane

Which of the following subdivisions of a cavity has no boney protection?

The abdominal cavity

Which of the following is the proper description of the human body and the anatomical position?

The body is erect with feet slightly apart and palms facing forward with thumbs pointing away from the body

How does the effector restore homeostasis in a negative feedback loop?

The effector opposes the initial stimulus and shuts off when conditions return to normal range

Negative feedback loops produce responses in the opposite direction of the initial stimulus while positive feedback loops produce responses in the same direction as the initial stimulus?

True

Which organ systems are responsible for most of the regulatory functions of the body ensuring homeostasis?

nervous system/endocrine system