OPENSTAX ANATOMY AND PHYSIOLOGY 2E UNIT 1 EXAM LATEST 2026
UPDATED QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027)
|A+ GRADED |GUARANTEED PASS
Dorsal (posterior) cavity - Answers -1 of 2 of body's largest compartments. Contain and protect
delicate internal organs.
Ventral (anterior) cavity - Answers -1 of 2 of body's largest compartments. Contain and protect
delicate internal organs. Allows for significant change in size and shape of organs as they
perform functions.
Cranial Cavity - Answers -houses the brain
Spinal Cavity - Answers -encloses spinal cord.
Thoracic Cavity - Answers -Superior subdivision of ventral cavity, enclosed by rib cage. Contains
the heart and lungs and diaphragm forms the floor and separates from abdomenopelvic cavity.
9 Abdominal regions - Answers -Row 1: right hypochondriac region, epigastric region, left
hypochondriac region,
Row 2: right lumbar region, umbilical region, left lumbar region,
Row 3: right iliac region, hypogastric region, left iliac region
1|Page
, 4 abdominal quadrants - Answers --Right upper quadrant (RUQ)
-Left upper quadrant (LUQ)
-Right lower quadrant (RLQ)
-Left lower quadrant (LLQ)
Pleura - Answers -serous membrane that encloses pleural cavity and surrounds lungs
Pericardium - Answers -serous membrane that encloses pericardial cavity, surrounds heart
Peritoneum - Answers -serous membrane that encloses peritoneal cavity; surrounds several
organs in abdominopelvic cavity.
X-rays - Answers -Discovered by German Physicist Wilhelm Rontgen. (1895)
-Form of high energy electromagnetic radiation w/ a short wavelength capable of penetrating
solids & ionizing gases. X-rays are emitted from an x-ray machine towards a specially treated
magnetic plate. Beam of radiation results in darkening of plate. Tissues are shown as gray &
bones are shown as white.
-Disadvantage: High energy radiation is capable of damaging cells & can initiate changes leading
to cancer.
- Answers -
2|Page
UPDATED QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027)
|A+ GRADED |GUARANTEED PASS
Dorsal (posterior) cavity - Answers -1 of 2 of body's largest compartments. Contain and protect
delicate internal organs.
Ventral (anterior) cavity - Answers -1 of 2 of body's largest compartments. Contain and protect
delicate internal organs. Allows for significant change in size and shape of organs as they
perform functions.
Cranial Cavity - Answers -houses the brain
Spinal Cavity - Answers -encloses spinal cord.
Thoracic Cavity - Answers -Superior subdivision of ventral cavity, enclosed by rib cage. Contains
the heart and lungs and diaphragm forms the floor and separates from abdomenopelvic cavity.
9 Abdominal regions - Answers -Row 1: right hypochondriac region, epigastric region, left
hypochondriac region,
Row 2: right lumbar region, umbilical region, left lumbar region,
Row 3: right iliac region, hypogastric region, left iliac region
1|Page
, 4 abdominal quadrants - Answers --Right upper quadrant (RUQ)
-Left upper quadrant (LUQ)
-Right lower quadrant (RLQ)
-Left lower quadrant (LLQ)
Pleura - Answers -serous membrane that encloses pleural cavity and surrounds lungs
Pericardium - Answers -serous membrane that encloses pericardial cavity, surrounds heart
Peritoneum - Answers -serous membrane that encloses peritoneal cavity; surrounds several
organs in abdominopelvic cavity.
X-rays - Answers -Discovered by German Physicist Wilhelm Rontgen. (1895)
-Form of high energy electromagnetic radiation w/ a short wavelength capable of penetrating
solids & ionizing gases. X-rays are emitted from an x-ray machine towards a specially treated
magnetic plate. Beam of radiation results in darkening of plate. Tissues are shown as gray &
bones are shown as white.
-Disadvantage: High energy radiation is capable of damaging cells & can initiate changes leading
to cancer.
- Answers -
2|Page
