Biology 2060 - Anatomy and Physiology II » Summer 2021 » Lecture Exam 3
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Question #1
Hemoglobin is crucial for oxygen transport in the blood because oxygen has a ________ solubility coefficient in water.
A.
high
B.
low
Question #2
Approximately what percent of the oxygen in blood is transported by the hemoglobin of erythrocytes?
A.
98%
B.
33%
C.
50%
D.
75%
E.
66%
Question #3
Which of the following has the highest partial pressure of carbon dioxide?
A.
The alveoli of the lungs
B.
The systemic cells
C.
The blood circulating in systemic arteries
Question #4
Compared to its partial pressure at sea level, what would be the partial pressure of oxygen at an altitude with an atmospheric pressure of only 380 mmHg (recall that sea level atmospheric pressure is 760 mmHg)?
A.
Po2 would be one-fourth as much as it would be at sea level.
B.
Po2 would be three-quarters as much as it would be at sea level.
C.
Po2 would be half as much as it would be at sea level.
D.
Po2 would be twice as much as it would be at sea level.
Question #5
Histamine release results in increased airway resistance and decreased airflow.
A.
FALSE
B.
TRUE
Question #6
An increase in the partial pressure of CO 2 causes bronchioles to
A.
constrict.
B.
dilate.
Question #7
The most common cell making up the alveolar wall is the
A.
alveolar macrophage.
B.
dust cell.
C.
alveolar type II cell.
D.
alveolar type I cell.
E.
septal cell.
Question #8
An air passage (valley) beneath a turbinate within the nasal cavity is referred to as a
A.
vibrissa.
B.
concha.
C.
meatus.
D.
vestibule.
Question #9
Compared to its partial pressure in the atmosphere, oxygen's partial pressure in the alveoli is
A.
higher.
B.
lower.
C.
equivalent.
Question #10
What structures are used by both the respiratory and digestive systems?
A.
Oropharynx and laryngopharynx
B.
Laryngopharynx and larynx
C.
Laryngopharynx and esophagus
D.
Nasal cavity and nasopharynx
E.
Paranasal sinuses
Question #11
What structure connects the larynx to the primary bronchi?
A.
Trachea
B.
Bronchioles
C.
Esophagus
D.
Alveolar ducts
E.
Pharynx
Question #12
When central chemoreceptors detect a drop in the pH of the cerebrospinal fluid,
A.
medullary respiratory centers trigger a decrease in rate and depth of breathing.
B.
pontine respiratory centers trigger a decrease in rate and depth of breathing.
C.
the vagus and phrenic nerves stimulate decreased production of the catalyst carbonic anhydrase.
D.
medullary respiratory centers trigger an increase in rate and depth of breathing.
Question #13
What type of tissue lines the trachea?
A.
Simple squamous epithelium
B.
Pseudostratified ciliated columnar epithelium
C.
Stratified squamous keratinized epithelium
D.
Stratified squamous nonkeratinized epithelium
E.
Cuboidal epithelium
Question #14
Airflow is ________ related to the pressure gradient and ________ related to resistance.
A.
directly; inversely
B.
directly; directly
C.
inversely; inversely
D.
inversely; directly
Question #15
The expiratory reserve volume plus the residual volume equals the
A.
inspiratory reserve volume.
B.
tidal volume.
C.
functional residual capacity.
D.
vital capacity.
E.
forced expiratory volume.
Question #16
Air flows out of the body during expiration because
A.
intrapulmonary pressure is greater than atmospheric pressure.
B.
intrapleural pressure is greater than intrapulmonary pressure.
C.
intrapleural pressure is greater than atmospheric pressure.
D.
atmospheric pressure is greater than intrapulmonary pressure.
Question #17
Which answer places the following events in proper order for pulmonary ventilation? a: Thoracic cavity volume changes. b: Brainstem nuclei stimulate skeletal muscles to contract. c: Air flows down its pressure gradient. d: Dimensional changes in the thorax lead to pressure changes within the lung.
A.
c, a, d, b
B.
b, a, d, c
C.
a, c, d, b
D.
b, d, c, a
E.
d, c, b, a
Question #18
Which do not belong to the respiratory zone of the respiratory system?
A.
Pulmonary alveoli
B.
Alveolar ducts
C.
Alveolar sacs
D.
Terminal bronchioles
E.
Respiratory bronchioles
Question #19
The amount of air that can be forcibly inhaled after a normal inspiration is the
A.
residual volume.
B.
inspiratory capacity.
C.
inspiratory reserve volume.
D.
functional residual capacity.
Question #20
Terminal bronchioles of the lower respiratory system are lined with
A.
nonkeratinized stratified squamous.
B.
keratinized stratified squamous epithelium.
C.
pseudostratified ciliated columnar epithelium.
D.
simple cuboidal epithelium.
E.
stratified columnar epithelium.
Question #21
What changes in the blood levels of respiratory gases result from hyperventilation?
A.
Oxygen and carbon dioxide levels rise.
B.
Oxygen levels rise and carbon dioxide levels fall.
C.
Oxygen levels do not change but carbon dioxide levels fall.
D.
If we have equal masses of ethane and oxygen, there is no limiting reactant.
E.
Oxygen and carbon dioxide levels fall.
Question #22
These muscles extend from a superior rib inferomedially to the adjacent inferior rib. They elevate the ribs upon contraction, thereby increasing the transverse dimensions of the thoracic cavity during inhalation.
A.
External intercostals
B.
Scalenes
C.
Serratus posterior inferior
D.
Internal intercostals
E.
Transversus thoracis
Question #23
Exposure to irritants causes mucus production to
A.
increase.
B.
decrease.
Question #24
Which is not part of the respiratory membrane?
A.
Plasma membrane of Type II cell
B.
Fused basement membrane
C.
Plasma membrane of Type I cell
D.
Capillary endothelium
Question #25
Bronchial arteries carry ________ blood to the tissues of the lung.
A.
oxygenated
B.
deoxygenated
Question #26
The gallbladder is part of the gastrointestinal tract.
A.
TRUE
B.
FALSE
Question #27
The pancreas is located primarily on the ________ side of the body, and it produces an _______ juice that is rich in a variety of enzymes.
A.
right, alkaline
B.
left, acidic
C.
right, acidic
D.
left, alkaline
Question #28
An organ that helps break down food but is not part of the tube through which the foodstuffs pass is referred to as a(n)
A.
organ of mastication.
B.
accessory digestive organ.
C.
chemically digesting organ.
D.
diffuse ingestive structure.
E.
alimentary canal organ.
Question #29
Protein digestion begins in the
A.
small intestine.
B.
mouth.
C.
stomach.
D.
esophagus.
E.
large intestine.
Question #30
Lysozyme within saliva primarily functions to
A.
wash materials off teeth.
B.
initiate the chemical breakdown of starch.
C.
inhibit bacterial growth.
D.
moisten and disperse food.
Question #31
Which is (are) not found in the wall of the large intestine?
A.
Intestinal glands
B.
Simple columnar epithelium
C.
Villi
D.
Lymphatic nodules
E.
Goblet cells
Question #32
An increased secretion of watery saliva will result when the
A.
basal nuclei of the cerebrum activate somatic pathways to salivary glands.
B.
salivary nuclei of the cerebrum activate sympathetic pathways to salivary glands.
C.
salivary nuclei of the brainstem activate parasympathetic pathways to salivary glands.
D.
basal nuclei of the brainstem activate sympathetic pathways to salivary glands.
E.
glossopharyngeal nuclei of the pons activate somatic and sympathetic pathways to the salivary glands.
Question #33
The accumulation of large amounts of adipose tissue in the ________ that extends from the inferolateral surface of the stomach can form what is commonly called a "beer belly."
A.
lesser omentum
B.
mesocolon
C.
falciform ligament
D.
mesentery proper
E.
greater omentum
Question #34
The ________ are considered the opening from the oral cavity to the oropharynx.
A.
choana
B.
fauces
C.
glossus
D.
conchae
E.
fossae
Question #35
The inferior esophageal sphincter is also known as the
A.
pharyngoesophageal sphincter.
B.
cardiac sphincter.
C.
esophageal hiatus.
D.
pharyngealgastric sphincter.
E.
pyloric sphincter.
Question #36
For the majority of the GI tract, which layer(s) of the wall contain smooth muscle?
A.
Muscularis only
B.
Submucosa and muscularis
C.
Mucosa and muscularis
D.
Serosa only
E.
Mucosa and adventitia
Question #37
A.
the transport of bile and pancreatic juice.
B.
peristalsis.
C.
the secretion of mucus.
D.
the passage of chyme into the small intestine.
E.
salivary gland secretion.
Question #38
Amylase from saliva digests
A.
glucose.
B.
lipids.
C.
protein.
D.
starch.
Question #39
Which bones form the hard palate?
A.
Palatine bones and maxillae
B.
Maxillae and inferior nasal conchae
C.
Palatine bones
D.
Maxillae and sphenoid
E.
Ethmoid and sphenoid bones
Question #40
Which duct transports bile to and from the gallbladder?
A.
Cystic duct
B.
Hepatic duct
C.
Hepatopancreatic duct
D.
Pancreatic duct
E.
Common bile duct
Question #41
The term "retroperitoneal" may be used to describe the location of certain abdominal organs. This means that such organs are located
A.
between folds of the parietal peritoneum.
B.
deep to the visceral peritoneum.
C.
between the visceral and parietal layers of the peritoneum.
D.
in the peritoneal cavity.
E.
posterior to the parietal peritoneum.
Question #42
Which is the layer of the serous membrane that directly covers the surface of internal organs?
A.
Visceral peritoneum
B.
Muscularis mucosa
C.
Rectal peritoneum
D.
Parietal peritoneum
E.
Omental layer
Question #43
The type of receptor within the GI tract wall that detects stretch is the
A.
retroperitoneal proprioceptor.
B.
steroid receptor.
C.
mechanoreceptor.
D.
chemoreceptor.
Question #44
Which organ is retroperitoneal?
A.
Jejunum
B.
Stomach
C.
Pancreas
D.
Cecum
E.
Transverse colon
Question #45
"Segmentation" within the small intestine refers to the
A.
gastroileal reflex that moves materials from the stomach to the large intestine.
B.
propulsion of material between the segments of the GI tract.
C.
back-and-forth motion that mixes chyme with glandular secretions.
D.
division of function between the different segments of the small intestine.
Question #46
If a fatty meal has been ingested, the liver and gallbladder need to be alerted about the need for bile. The receptors that are responsible for sensing the fat in the ingested food are referred to as
A.
omental neurons
B.
bilireceptors.
C.
osmodetectors.
D.
chemoreceptors.
E.
mechanoreceptors.
Question #47
The outer layer of the muscularis of the colon is discontinuous (does not entirely surround the colon), and forms the bundles of smooth muscles known as the teniae coli.
A.
FALSE
B.
TRUE
Question #48
What is the correct order for the layers of the GI tract wall, from innermost (next to lumen) to outermost?
A.
Adventitia/serosa - mucosa - submucosa - muscularis
B.
Mucosa - submucosa - muscularis - adventitia/serosa
C.
Muscularis - mucosa - adventitia/serosa - submucosa
D.
Mucosa - submucosa - adventitia/serosa - muscularis
E.
Adventitia/serosa - muscularis - mucosa - submucosa
Question #49
The esophagus is part of the gastrointestinal tract.
A.
TRUE
B.
FALSE
Question #50
Mechanoreceptors and chemoreceptors are found in the
A.
adventitia of the upper portion of the GI tract.
B.
myenteric plexus of the mucosa of the intestine.
C.
mucosa and submucosa of the GI tract along its length.
D.
epithelium of the inferior portion of the GI tract.
E.
muscularis interna of the entire length of the GI tract.
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