Which of the following would NOT be found in the stomach?
a)Mucuc
b)Pepsin
c)Villi
d)Hydrochloric acid

What is one of the roles of the pancreas in nutrition?
a)Absorb nutrients
b)Churn food
c)Dissolve food
d)Neutralize acids

What enzyme found in saliva breaks chemical bonds between the sugar monomers in starches?
a)Amylase
b)Chime
c)Pepsin
d)Hydrochloric acid

Where does the process of chemical digestion begin?
a)Stomach
b)Esophagus
c)Small intestine
d)Mouth

What does mechanical digestion in the stomach involve?
a)Absorption of nutrients by villi
b)Pepsin and bile
c)Strong muscular contractions
d)Bile and pancreatic fluid

The stomach breaks down food into a soft partially digested mixture called
a)Pepsin
b)Chime
c)Amylase
d)Bible

Through which structure do wastes pass into the rectum?
a)Duodenum
b)Large intestine
c)Small intestine
d)Villus

Water is extracted from digested food in the body primarily by the
a)Bladder
b)Gall bladder
c)Large intestine
d)Pancreas

The function of the excretory system is to control homeostasis and
a)Break down nutrients
b)Remove wastes
c)Absorb nutrients
d)Prevent infection

The main organs of the excretory system are the
a)Kidneys
b)Lungs
c)Intestines
d)Uretes

Which of the following is NOT part of a nephron?
a)Urethra renal vein
b)Glomerulus
c)Bowman’s capsuke

The activity of the kidneys is controlled by hormones and by the
a)Volume of nutrients
b)Volume of filtrate
c)Composition of the blood
d)Composition of the urine

When the kidneys detect an increase in salt, they respond by
a)Excreting less salt in urine
b)Returning more salt to the blood by filtration
c)Returning more salt to the blood by reabsorption
d)Returning less salt to the blood by reabsorption

Which of the following controls the activity of the kidneys?
a)The composition of the blood
b)Regulatory hormones that are released in response to the composition if blood
c)Both a and b
d)None of the above

What percentage of the filtrate’s water that enters Bowman’s capsule is reabsorbed into the blood?
a)100 percent
b)99 percent
c)50 percent
d)Less than 25 percent

In the kidneys, both useful substances and wastes are removed from the blood by
a)Reabsorption
b)Excretion
c)Dialysis
d)Filtration

The process of dialysis
a)Carries urine to the urinary bladder
b)Pumps blood throughout the body
c)Returns filtered blood to the body
d)Forces water into the cells and tissues by osmosis

Dialysis performs the function of the
a)Liver
b)Ureter
c)Kidneys
d)Urinary bladder

What materials are removed from the blood through dialysis?
a)Urea and excess salts
b)Chyme
c)Amylase and pepsin
d)None of the above