PAX Physiology 2

Question 1

Which part of the neuron receives incoming signals from other neurons?

Accepted Answer

Dendrites

Answer

Dendrites are the branching extensions of a neuron that receive incoming signals and transmit them toward the cell body.

Question 2

Which hormone primarily lowers blood glucose by promoting its uptake into cells?

Accepted Answer

Insulin

Answer

Insulin, produced by beta cells of the pancreas, lowers blood glucose by facilitating cellular uptake and promoting glucose storage as glycogen.

Question 3

What is the primary function of the stomach in digestion?

Accepted Answer

Mechanical and chemical digestion of food

Answer

The stomach mechanically churns food and chemically digests it using hydrochloric acid and pepsin, breaking down proteins and creating chyme.

Question 4

The 'fight or flight' stress response is controlled by which division of the nervous system?

Accepted Answer

Sympathetic nervous system

Answer

The sympathetic nervous system activates the fight-or-flight response, increasing heart rate, dilating airways, and redirecting blood to muscles.

Question 5

Where does the majority of nutrient absorption occur in the digestive system?

Accepted Answer

Small intestine

Answer

The small intestine, through villi and microvilli, is the primary site for absorbing proteins, fats, and carbohydrates into the bloodstream.

PAX - Pre-Admission Examination Practice Test