What type of cells secretes surfactant, a fluid that lowers surface tension in the alveoli?

The respiratory zone of the lower respiratory tract starts at the:

Alveoli are comprised primarily of what type of cell and tissue?

Air and food are separated into the correct tubes by the action of the:

The volume of air exchanged during normal quiet breathing is known as:

Which lung volume represents the maximum volume of air that can be inspired and then forcibly expired?

Which of the following is not a major chemical stimulus for regulating the rate of breathing?

The definition of intrapulmonary pressure is the:

Oxygen and carbon dioxide exchange across the respiratory membrane is accomplished using which primary transport mechanism?

What primary respiratory muscles would be used for forceful exhalation, such as when blowing up a balloon?

What structure is found on the left lobe of the lung but is not present on the right lobe?

What structures provide the greatest total surface area for gas exchange in the lungs?

The respiratory membrane is composed of the:

The relationship P₁V₁ = P₂V₂ (at constant temperature and number of gas molecules) is referred to as:

What is responsible for holding the lungs to the thoracic wall?

Following the tertiary bronchi, the next major passageways in the respiratory system are the:

The pleurae are vital to the lungs because they produce:

What are the four basic layers of the alimentary canal from the lumen outward?

Wave-like contractions that move food through the alimentary canal are called:

The chemical and mechanical process of breaking down food to substances that can be absorbed is called:

The process by which the products of digestion pass through the lumen into the blood or lymph is called:

The enzymatic breakdown of any food molecule that involves the addition of a water molecule to break a bond is called:

The pancreas releases the majority of its digestive enzymes into which section of the alimentary canal?

Which of the following is not a characteristic of the colon (large intestine)?

Which of the following is not a characteristic function of the stomach?

The organ of the digestive tract that has the most absorption of nutrients is the:

The structural modifications that increase the surface area of the small intestine include all of the following except:

Amino acids are essential to the body for all of the following except:

A person who has been on a hunger strike for several days, compared to normal, has an:

Which organ chemically processes nearly every category of nutrient and plays a central role in metabolism?

Which of the following nutrient categories yields the greatest calorie value per gram?

The principal intracellular cation would be:

This ion is part of coenzymes that act in the hydrolysis of ATP and high levels can cause diarrhea; it is:

This element concentrates in the thyroid gland and is key to T3 and T4 synthesis:

The major extracellular anion is:

This mineral accounts for most of the weight of the body's minerals:

This element is an essential component of hemoglobin:

The cooling mechanism you feel when the wind blows across your skin is an example of:

Glomerular capillaries differ from other capillary networks in the body because they are delivered from and drained into:

Glucose is not normally found in the urine because it is:

Conditions such as diabetes mellitus and starvation are closely related to the presence of ketone bodies in the urine, a condition known as:

Approximately how many nephrons are there per kidney?

The nephrons with longer loops of Henle that dive deep into the medulla are the:

The name of the tubes that convey urine from the kidney to the bladder is the:

What is the main ingredient that is reabsorbed from the filtrate back into the body?

The juxtaglomerular cells and the macula densa cells together play a:

Where does most of your kidney reabsorption take place?

What part of the loop of Henle is highly permeable to water?

A blockage in this structure would cause the hydrostatic capsular pressure (pressure in Bowman's capsule) to increase:

Potassium, magnesium, and phosphate ions are the predominate electrolytes in which fluid compartment?

Sodium balance is regulated primarily by the amount that is:

Which of the following factors enhance the release of ADH?

The substance in body fluids that determines most of their chemical and physical reactions is the:

What organs are the ultimate acid-base regulatory organs of the body?

The fluid that bathes the cells found in tissue is called:

Under most circumstances, the greatest volume of water is lost in the:

The most abundant cation in the interstitial fluid is:

The common cause of acid-base imbalance is:

If you drink a large amount of water very quickly, dangerous cellular over-hydration can occur. This condition is called:

The structures that draw an ovulated oocyte into the female duct system are the:

The normal site of embryo implantation is the:

Secondary sex characteristics are a result of:

Which structure produces the male sex hormones (testosterone)?

The normal diploid number of human chromosomes is:

What hormone stimulates the secretion of testosterone?

Spermatozoa are to seminiferous tubules as oocytes are to:

The sex of a child is determined by:

The placenta is fully functional and providing all nutrients and waste removal by the end of what month in pregnancy?

The first 2-3 days after giving birth, the mammary glands produce a high-protein, low-fat product called:

What hormone causes the "let-down reflex" (milk ejection) in the breasts?

Most major body systems are operational in the fetus by 4-6 months, with the exception of the:

The outer layer of the blastocyst, which later attaches to the uterine wall, is the:

Which of the following is a normal change that occurs to a baby's cardiovascular system immediately after birth?

The umbilical vein functions to:

The umbilical arteries function to:

The germ layer from which the skeletal muscles, heart, and skeleton are derived is the:

Which of the following cannot pass through the placental barriers?

The initial stage of labor during which most of the cervix is stretched open is called the:

A man who is homozygous for normal vision (ff) marries a woman who is heterozygous for farsightedness (Ff). Assuming farsightedness (F) is dominant, what is the predicted outcome for farsightedness in their offspring?

A metabolic disorder called PKU is due to an autosomal recessive gene (p). Only homozygous recessive individuals (pp) exhibit this disorder. What percentage of offspring would exhibit PKU if the parents have the genotypes (Pp) and (pp)?

In a population of rabbits, there are 32 spotted rabbits and 11 solid-haired rabbits (an approximate 3:1 ratio). If a genetic cross between two spotted rabbits produced these offspring, what is the probable genotype of the parents?

What is the probability of a couple having six boys in a row?