ATI TEAS Nursing Entrance Exam (Science) 2026 – Practice Questions with Verified Correct Answers Study Guide

ATI TEAS NURSING ENTRANCE EXAM (SCIENCE)
QUESTIONS WITH VERIFIED AND CORRECT ANSWERS
LATEST 2026

Aldosterone - ans-Trigger: decreased blood pressure; increased K levels
xc xc xc xc xc xc xc xc xc




Function: increases reabsorption of Na from the renal tubules, causing more water to be re
xc xc xc xc xc xc xc xc xc xc xc xc xc xc




absorbed via osmosis xc xc xc




Result: increases blood pressure
xc xc xc




Antidiuretic Hormone (ADH); also called vasopressin - ans-
xc xc xc xc xc xc xc




Trigger: decreased blood volume; increased osmolality of blood
xc xc xc
xc
xc xc xc xc




Function: prevents fluid loss to maintain blood volume by increasing reabsorption of water f
xc xc xc xc xc xc xc xc xc xc xc xc xc




rom renal tubules and collecting ducts
xc xc xc xc xc




Result: increases blood volume
xc xc xc




Angiotensin (Renal Hormone) - ans-Trigger: activated by renin
xc xc xc xc xc xc xc




Function: Constricts arteriolar blood vessels; increases reabsorption of Na and Cl and wate
xc xc xc xc xc xc xc xc xc xc xc xc




r retention in the renal tubules ; stimulates ADH secretion
xc xc xc xc xc xc xc xc xc xc




Result: increases blood pressure
xc xc xc




Renin (Renal Hormone) - ans-Trigger: decreased blood pressure
xc xc xc xc xc xc xc




Function: activates angiotensin; increases secretion of ADH and aldosterone
xc xc xc xc xc xc xc xc xc




Result: increases blood pressure
xc xc xc




Gastric (Digestive Hormone) - ans-Stimulus for Release: Arrival of protein in the stomach
xc xc xc xc xc xc xc xc xc xc xc xc




Released from: stomach/small intestine
xc xc xc




Target: parietal cells of the stomach
xc xc xc xc xc




Function: stimulates gastric acid and mucosal secretion; increases motility
xc xc xc xc xc xc xc xc




Ghrelin (Digestive Hormone) - ans-Stimulus for Release: empty stomach
xc xc xc xc xc xc xc xc




Released from: Stomach xc xc




Target: Hypothalamus
xc

, Function: Induces hunger xc xc




Leptin (Digestive Hormone) - ans-Stimulus for Release: fat in the bloodstream
xc xc xc xc xc xc xc xc xc xc




Released from: adipose (fat) tissue
xc xc xc xc xc




Target: Hypothalamus
xc




Function: Reduces hunger by signaling satiety
xc xc xc xc xc




Secretin (Digestive Hormone) - ans-
xc xc xc xc




Stimulus for Release: Arrival of chyme in the duodenum
xc xc xc xc xc xc xc xc




Released from: small intestine
xc xc xc




Target: pancreas, stomach, liver
xc xc xc




Function: stimulates pancreas to release bicarbonate; inhibits gastric emptying; increases
xc xc xc xc xc xc xc xc xc xc




bile secretion
xc




Insulin (Digestive Hormone) - ans-Stimulus for Release: Increase in blood glucose levels
xc xc xc xc xc xc xc xc xc xc xc xc




Released from: Pancreas xc xc




Target: liver, muscle and adipose tissue
xc xc xc xc xc




Function: Stimulates uptake of glucose for conversion into glycogen; decreases blood gluc
xc xc xc xc xc xc xc xc xc xc xc




ose levels
xc




Glucagon (Digestive Hormone) - ans-Stimulus for Release: low blood glucose levels
xc xc xc xc xc xc xc xc xc xc xc




Released from: pancreas xc xc




Target: liver xc xc




Function: Initiates gastric secretion and slows digestion
xc xc xc xc xc xc




Somatostatin (Digestive Hormone) - ans-Stimulus for Release: acid in the stomach
xc xc xc xc xc xc xc xc xc xc




Released from: stomach xc xc




Target: Secretory stomach cels
xc xc xc




Function: inhibits gastric secretion and slows digestion
xc xc xc xc xc xc