The exchange of gases that occurs during external respiration takes place in the

The amount of air left in the lungs after a normal expiration, labeled D in the Spirograph is called the

Which of the following is NOT a structure associated with the lungs?

Which of the following are components of the respiratory zone of the lower respiratory system?

Carbon monoxide is a colorless and odorless gas that

Which of the following affect the release of oxygen from hemoglobin?

Which of the following is NOT a typical respiratory system change observed as the result of aging?

The human lungs contain about_ alveoli

The openings to the auditory (Eustachian) tubes are located in the

Cartilaginous rings

The nasal cavity connects to the pharynx through two openings called the

After a rigorous exercise sessions has ended, there is an abrupt drop in the ventilation rate followed by a more gradual decrease. The initial abrupt drop in ventilation primarily from decreased stimulation of

The chloride shift

Which of the labeled steps i the diagram do NOT involve contraction of any respiratory muscles?

The nasal cavity is lined with

Painful or labored breathing is referred to as

which of the following conditions is necessary for air to enter the lungs during inspiration?

The total lung capacity equals

Yawning is a modified respiratory movement that

Which of the following regions of the bronchial tree divides to from multiple alveolar ducts?

The true vocal cords are located in the

The palatine tonsils are found in the

The vital capacity of the respiratory system can decrease by as much as _ by the age of 70

The amount of air that you can breathe out after a maximal inspiration, labeled B in spirogram, is called the

Which of the following is NOT a function of the respiratory system?

Which of the following respiratory diseases is caused by a virus that is easily spread from person to person through coughing, sneezing, or touching contaminated objects?

Under normal breathing conditions at sea level, the lowest concentration of carbon dioxide (PCO2) would be observed at point _ in the diagram of external and internal respiration.

A disorder of the respiratory system characterized by the destruction of the alveolar walls is called

Gas exchange in the lungs occurs across the respiratory membrane by the process of

Which of the following structures in the respiratory system is commonly called the Adams apple

The volume of air in one normal reach is called the

Which of te following changes would lead to an increase in the rate and depth of breathing?

Based on the volumes shown in the spirogram, what is the resting minute ventilation (MV) of this individual at a breathing rate of 12 breathes per min?

All of the following decreases the rate of gas exchange during external respiration EXCEPT

The breathing rate is controlled by the respiratory center that consists of a group of neurons located in the

Why is the left lung about 10% smaller than the right lung?

Approximately how much of the total CO2 in the blood is carried as bicarbonate?

Which of the labeled steps in the diagrams involve contraction the diaphragm?

Histamine is a mediator of allergic reaction that causes

The flap of elastic cartilage covered by epithelium that closes off the larynx and prevents food and water from entering the larynx during swalllowing is called the

Respiration rate are mainly controlled by the medulla oblongata and

Which of the labeled steps in the diagram involve contraction of the abdominal muscles?

All of the following are normal changes that occur in the respiratory system during exercise EXCEPT

The exchanges of gases between blood in the systemic capillaries and tissue cells is called

Most oxygen in the blood is transported as

The volume of air that can be forcible exhaled after a normal exhalation is the

Which of the labeled locations on the diagram of external and internal respiration would have the following concentrations of gases: PO2 = 105 mm Hg and PCO2 = 40 mm Hg?

Which of the following lists a correct order in which inhaled air sequentially moves through the structures of the respiratory passageway?

Nerve impulses travel from the active dorsal respiratory group of the respiratory center of the diaphragm via the

The portion of peritoneum that anchors the small intestines to the posterior abdominal wall is called the

Which of the following is NOT an enzyme used to digest carbohydrates?

Which of the following substance can be absorbed in the stomach?

The tongue is primarily composed of

The final portion of the small intestine, which is mostly found in the lower right quadrant, is called the

When empty, the mucosa of the stomach contains large folds called

Absorption of digested nutrients and water in the small intestine occurs by

The major events of chemical digestion and absorption of foods occur in the

Which of the following lists is the correct order of movement of digestive material through the large intestine?

Pepsinogen is produced by the

All of the following are digestive enzymes found in the pancreatic juice EXCEPT

The portion of the large intestine just before the rectum is the

The structure (labeled D in the diagram) that is used to prevent the movement of food into the respiratory system during swelling is called

Chisel-shaped teeth that are adapted for cutting into food are called

Salicary amylase is an enzyme secreted into the oral cavity to start the digestion of

Storage of glycogen, vitamins (A,D,E,K) and minerals (iron and copper). along with detoxification of chemicals like ammonia, are functions of the

Which of the following is not likely to cause of “emotional eating”

The form of the hepatitis that is commonly referred to as “infectious hepatitis” is

Which of the following occur during the intestinal phase of digestion

Which of the following labeled regions of the large intestine is the rectum in which feces collects prior to defecation?

Chyme is released from the stomach into the

Which of the labeled absorptive processes in the figure occur by passive transport without using cellular energy?

Which of the following is an intentional hormone that is released during the intestinal phase of digestion and stimulates the contraction of the gall bladder leading to the flow of bile into the duodenum?

Which of the following digestion products are absorbed into the lacteals found within the vili?

Which of the following is NOT a protein-digesting enzyme?

The small intestinal enzyme that catalyzes that hydrolysis of milk sugar into a glucose and galactose is called

The layer of the GI tract wall containing networks of enteric neurons that control the secretory activity of the GI tract is called

The intestinal hormone that induces a feeling of satiety (full to satisfaction) is

The greater omentum is part of the

The projection hanging from the soft plate that helps prevent food and fluid from entering that nasal cavity during swalling is the

Which of the following structures associated with the tongue contains the taste buds?

The pancreatic duct transports pancreatic juice from the pancreas into the

The ability of the GI tract to mix and move material along the length is called

In adult humans, all of the following are function of the liver EXCEPT

The first portion of the large intestine is called the

All of the following organs are part of the gastrointestinal tract except the

Which of the following cranial nerves carry electrical signals that stimulate the gastric glands to secrete gastric juice during the cephalic stage of digestion?

Teeth are primarily composed of a bone-like substance called

Which of the following organs does not release substances into the duodenum?

The absorption of fructose across the microvillar surface of intestinal epithelial cells, marked B in the figure, occurs by

Which of the following paths are followed by nutrient-rich blood entering the liver through the hepatic portal vein?

All of the following are characteristic of saliva EXCEPT

The layer of GI tract wall containing a large number pf blood and lymphatic vessels that receives absorbed food molecules is called the

The sight, smell or thought of food activates the _ phase of digestion