1|Page
BIOL 235 Final Exam 2025 – Anatomy and Physiology
Comprehensive Review, Study Guide & Practice Test Questions
Ace your BIOL 235 Final Exam with this complete Anatomy and Physiology study guide
featuring 2025 updated exam questions, detailed topic summaries, and practice test solutions.
Covers major body systems, homeostasis, neural and muscular physiology, and lab review
concepts. Ideal for students preparing for the BIOL 235 final, Athabasca University exams, or
online biology assessments.
BIOL 235 Final Exam,
BIOL 235 Final Exam 2025,
BIOL 235 study guide,
BIOL 235 exam answers,
The basic steps of gas exchange, or respiration, in the body include
A) external respiration
B) pulmonary ventilation
C) internal respiration
D) both A and B
E) A, B, and C - ANSWER-E
Which of the following is the dominant method of carbon dioxide transport?
A) bound to hemoglobin
B) bound to oxygen
C) dissolved in plasma as a gas
,2|Page
D) dissolved in plasma as bicarbonate ions
E) diffusion - ANSWER-D
Where is the rhythmicity center for respiration?
A) in the medulla
B) in the pons
C) in the cerebrum
D) in the hypothalamus
E) in the cerebellum - ANSWER-A
The capability of the GI tract to move material along its length is called (1) motility, (2)
propulsion, (3) digestion, (4) defecation.
A) 1 only
B) 2 only
C) 3 only
D) 4 only
E) both 1 and 2 - ANSWER-E
Which cells are the main sites of gas exchange?
A) A
B) B
C) C
D) D
E) all of these choices - ANSWER-C
,3|Page
The muscles that elevates the ribs for breathing are the...
A) internal intercostal muscles
B) external intercostal muscles
C) diaphragm and external intercostal muscles
D) diaphragm and internal intercostal muscles
E) all of these choices - ANSWER-B
Airway resistance is affected primarily by the
A) thickness of the cartilage in the bronchial wall
B) partial pressure of each type of gas in inspired air
C) amount of elastic tissue in the lungs
D) diameter of the bronchioles
E) amount of surfactant - ANSWER-D
The conducting airways with the air that does not undergo respiratory exchange are known as
the...
A) inspiratory volume
B) residual volume
C) minimal volume
D) respiratory dead space
E) expiratory reserve volume - ANSWER-D
This term means the lungs and the chest wall expand easily.
A) High surface tension
B) Low surface tension
C) High compliance
, 4|Page
D) Low compliance
E) None of the above - ANSWER-C
Which of the following are classified as chronic obstructive pulmonary disorders?
A) chronic bronchitis
B) emphysema
C) pneumonia
D) asthma
E) A and B are correct - ANSWER-E
Which layer of the GI tract is composed of areolar connective tissue containing blood and lymph
vessels?
A) mucosa
B) lamina propria
C) MALT
D) muscularis
E) epithelium - ANSWER-B
Name the layer labeled A
A) submucosa
B) serosa
C) longitudinal muscle
D) mucosa
E) circular muscle - ANSWER-E
BIOL 235 Final Exam 2025 – Anatomy and Physiology
Comprehensive Review, Study Guide & Practice Test Questions
Ace your BIOL 235 Final Exam with this complete Anatomy and Physiology study guide
featuring 2025 updated exam questions, detailed topic summaries, and practice test solutions.
Covers major body systems, homeostasis, neural and muscular physiology, and lab review
concepts. Ideal for students preparing for the BIOL 235 final, Athabasca University exams, or
online biology assessments.
BIOL 235 Final Exam,
BIOL 235 Final Exam 2025,
BIOL 235 study guide,
BIOL 235 exam answers,
The basic steps of gas exchange, or respiration, in the body include
A) external respiration
B) pulmonary ventilation
C) internal respiration
D) both A and B
E) A, B, and C - ANSWER-E
Which of the following is the dominant method of carbon dioxide transport?
A) bound to hemoglobin
B) bound to oxygen
C) dissolved in plasma as a gas
,2|Page
D) dissolved in plasma as bicarbonate ions
E) diffusion - ANSWER-D
Where is the rhythmicity center for respiration?
A) in the medulla
B) in the pons
C) in the cerebrum
D) in the hypothalamus
E) in the cerebellum - ANSWER-A
The capability of the GI tract to move material along its length is called (1) motility, (2)
propulsion, (3) digestion, (4) defecation.
A) 1 only
B) 2 only
C) 3 only
D) 4 only
E) both 1 and 2 - ANSWER-E
Which cells are the main sites of gas exchange?
A) A
B) B
C) C
D) D
E) all of these choices - ANSWER-C
,3|Page
The muscles that elevates the ribs for breathing are the...
A) internal intercostal muscles
B) external intercostal muscles
C) diaphragm and external intercostal muscles
D) diaphragm and internal intercostal muscles
E) all of these choices - ANSWER-B
Airway resistance is affected primarily by the
A) thickness of the cartilage in the bronchial wall
B) partial pressure of each type of gas in inspired air
C) amount of elastic tissue in the lungs
D) diameter of the bronchioles
E) amount of surfactant - ANSWER-D
The conducting airways with the air that does not undergo respiratory exchange are known as
the...
A) inspiratory volume
B) residual volume
C) minimal volume
D) respiratory dead space
E) expiratory reserve volume - ANSWER-D
This term means the lungs and the chest wall expand easily.
A) High surface tension
B) Low surface tension
C) High compliance
, 4|Page
D) Low compliance
E) None of the above - ANSWER-C
Which of the following are classified as chronic obstructive pulmonary disorders?
A) chronic bronchitis
B) emphysema
C) pneumonia
D) asthma
E) A and B are correct - ANSWER-E
Which layer of the GI tract is composed of areolar connective tissue containing blood and lymph
vessels?
A) mucosa
B) lamina propria
C) MALT
D) muscularis
E) epithelium - ANSWER-B
Name the layer labeled A
A) submucosa
B) serosa
C) longitudinal muscle
D) mucosa
E) circular muscle - ANSWER-E
