TEAS 7 Science Practice Questions – Small Intestine

Which organ is the primary site of complete digestion of carbohydrates, proteins, and fats?

A. Stomach

B. Large intestine

C. Small intestine

D. Esophagus

C. Small intestine

Memory Trick

"Small = Solves it All"

Complete digestion happens in the small intestine.

The small intestine receives digestive secretions from which two organs?

A. Liver and spleen

B. Liver and pancreas

C. Pancreas and stomach

D. Gallbladder and stomach

B. Liver and pancreas

Memory Trick

"LP = Lunch Partners"

Liver → Bile

Pancreas → Pancreatic juice

What is the main digestive function of bile?

A. Digests proteins

B. Digests carbohydrates

C. Emulsifies fats

D. Produces glucose

C. Emulsifies fats

Memory Trick

"Bile Breaks Big Fat Balls" Bile does NOT digest fat directly. It breaks large fat globules into smaller droplets so enzymes can work.

Which organ produces bile?

A. Gallbladder

B. Pancreas

C. Liver

D. Small intestine

C. Liver

TEAS Trap Alert

Students often pick the gallbladder.

Remember:

Liver MAKES bile

Gallbladder STORES bile

Memory Trick

"Live-r Makes Bile"

Why does bile make food more alkaline?

A. To digest protein

B. To help pancreatic enzymes work

C. To absorb vitamins

D. To store nutrients

B. To help pancreatic enzymes work

Memory Trick

"Pancreas Prefers Basic" Food leaving the stomach is acidic. Bile neutralizes it.

Which pancreatic enzyme digests fats?

A. Trypsin

B. Lipase

C. Amylase

D. Pepsin

B. Lipase

Memory Trick

LIPase = LIPids (fats)

Whenever you see:

Lipid = Fat

Lipase = Digests Fat

Which pancreatic enzyme digests proteins?

A. Lipase

B. Amylase

C. Trypsin

D. Maltase

C. Trypsin

Memory Trick

"TRY Protein" → Trypsin = Protein

The walls of the small intestine contain glands that secrete:

A. Gastric juice

B. Bile

C. Pancreatic juice

D. Intestinal juice

D. Intestinal juice

Memory Trick

Small Intestine → Intestinal Juice Same location, same name.

Intestinal juice breaks proteins into:

A. Fatty acids

B. Glucose

C. Amino acids

D. Glycogen

C. Amino acids

Memory Trick

Proteins are made of Amino Acids

Protein → Amino Acids

Complex carbohydrates are ultimately broken down into:

A. Amino acids

B. Fatty acids

C. Glucose

D. Peptides

C. Glucose

Memory Trick

Carbs → Glucose = Body's Quick Fuel

Fats are digested into:

A. Amino acids and glucose

B. Fatty acids and glycerol

C. Glucose and glycogen

D. Peptides and amino acids

B. Fatty acids and glycerol

Memory Trick

Fat = Fatty Acids + Glycerol

Where does most nutrient absorption occur?

A. Stomach

B. Esophagus

C. Small intestine

D. Large intestine

C. Small intestine

Memory Trick

"Small Intestine = Absorption Station"

Which structures increase the surface area of the small intestine for absorption?

A. Alveoli

B. Nephrons

C. Villi

D. Cilia

C. Villi

Memory Trick

Villi = Very Important Little Fingers

Finger-like projections that absorb nutrients.

Why are villi richly supplied with blood vessels?

A. To store nutrients B. To digest proteins

C. To transport absorbed nutrients

D. To produce bile

C. To transport absorbed nutrients

Memory Trick: "Villi Grab, Blood Carries"

A patient has damage to the villi of the small intestine. Which problem is most likely?

A. Increased nutrient absorption

B. Reduced nutrient absorption

C. Increased bile production

D. Reduced saliva production

B. Reduced nutrient absorption

Memory Trick

No Villi = No Absorption

Less surface area = fewer nutrients absorbed.

Super Memory Sentence

"Liver makes bile, bile breaks fat, lipase finishes fat, trypsin tackles protein, villi absorb everything."

Small Intestine

Complete digestion + absorption

Liver

Produces bile

Gallbladder

Stores bile

Bile

Emulsifies fat

Lipase

Digests fats

Trypsin

Digests proteins

Carbohydrates

Become glucose

Proteins

Become amino acids

Fats

Become fatty acids + glycerol

Villi

Increase surface area

Blood vessels in villi

Transport nutrients