Question 1
MC GrawHill Biology Exam. Emotional states are integrated by the ________, which generates an output that creates such respiratory variations as laughing and crying.
- VRG
- PRG
- DRG
- SRG
- TRG
Question 2
Which of the following is directly related to respiratory production of carbon dioxide?
- Regulation of blood pressure
- The synthesis of vasodilators
- Aids in defecation
- Regulation of pH
- Regulation of body temperature
Question 3
Which of the following does not contain ciliated cells?
- Nasal cavity
- Trachea
- Primary bronchus
- Terminal bronchiole
- Laryngopharynx
Question 4
Which of the following is not a function of the respiratory system?
- Control of pH
- Promotes the flow of lymph and venous blood MC GrawHill Biology Exam
- Helps regulate blood pressure
- Assists in the synthesis of vasodilators
- Aids in defecation
Question 5
Which of the following sets of conditions would shift the oxyhemoglobin dissociation curve to the right?
- $\uparrow PO_2, \downarrow PCO_2, \uparrow$ temperature, $\uparrow BPG$
- $\uparrow PO_2, \downarrow PCO_2, \uparrow$ temperature, $\uparrow BPG$
- $\downarrow PO_2, \uparrow PCO_2, \uparrow$ temperature, $\uparrow BPG$
- $\downarrow PO_2, \uparrow PCO_2, \uparrow$ temperature, $\uparrow BPG$
- $\downarrow PO_2, \uparrow PCO_2, \downarrow$ temperature, $\uparrow BPG$
Question 6
Mucus plays an important role in cleansing inhaled air. It is produced by ________ of the respiratory tract.
- squamous alveolar cells
- great alveolar cells
- the pleurae
- ciliated cells
- goblet cells
Question 7
During exercise, which of the following directly increases respiratory rate?
- Increased $H^+$ level in the blood
- The Bohr effect
- Reduced blood pH
- Reduced oxyhemoglobin
- Anticipation of the needs of exercising muscle
Question 8
Carbon dioxide is transported by all the following means except ________.
- carbaminohemoglobin MC GrawHill Biology Exam
- carbonic acid
- carbonate
- bicarbonate ions
- dissolved gas
Question 9
Which structure is highlighted (reference leader line)?
- laryngeal cartilages
- hyoid bone
- thyrohyoid ligament
- tracheal cartilages
- cricothyroid ligament
Question 10
Which center bears the primary responsibility for generating the respiratory rhythm, but is influenced by several other centers? MC GrawHill Biology Exam
- PRG
- DRG
- VRG
- SRG
- TRG
Question 11
The pH of the cerebrospinal fluid is monitored by which of these brainstem centers?
- PRG
- Hypothalamic osmoreceptors
- Medullary baroreceptors
- Central chemoreceptors
- Hypothalamic thermoreceptors MC GrawHill Biology Exam
Question 12
Each hemoglobin molecule can transport up to ________ oxygen molecules.
- 6
- 2
- 3
- 4
- 5
Question 13
Which structure is highlighted (reference leader line)?
- left lobar bronchus
- left segmental bronchus
- right segmental bronchus
- intermediate bronchus
- right lobar bronchus
Question 14
Which of the following would lead to anemic hypoxia?
- Sickle-cell disease
- Emphysema
- Squamous-cell carcinoma
- Asthma
- Atelectasis
Question 15
Which of the following are the most numerous cells in the lungs? MC GrawHill Biology Exam
- Type I alveolar cells
- Type II alveolar cells
- Dust cells
- Vibrissae
- Ciliated cells
Question 16
Which structure is highlighted (reference leader line)?
- Nasal vestibule
- Nasal conchae
- Nasopharynx
- Oropharynx
- Laryngopharynx
Question 17
Conditions such as anxiety and pain cause ________.
- an increased respiratory rate
- an increased respiratory rate
- an increased respiratory rate
- a decreased respiratory rate
- a decreased respiratory rate
Question 18
Most of the $CO_2$ that diffuses from the blood into the alveoli comes from ________.
- Carbaminohemoglobin
- Carboxyhemoglobin
- Dissolved gas
- Carbonic acid
- Bicarbonate ions
Question 19
The ________ is/are only part of the respiratory tract that is/are lined with pseudostratified ciliated columnar epithelium.
- nasopharynx
- oropharynx
- laryngopharynx
- oropharynx and laryngopharynx
- nasopharynx, oropharynx, and laryngopharynx
