Ch. 1 The Human Body: An Orientation

Marieb - Human Anatomy & Physiology 11th Edition

Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Not the one you use?Change textbook

Marieb, Hoehn 11th Edition

Ch. 1 The Human Body: An Orientation

Problem 16

Chapter 1, Problem 16

Relate each of the following conditions or statements to either the dorsal body cavity or the ventral body cavity.
a. Surrounded by the bony skull and the vertebral column
b. Includes the thoracic and abdominopelvic cavities
c. Contains the brain and spinal cord
d. Contains the heart, lungs, and digestive organs

Verified step by step guidance

Identify the two main body cavities mentioned: the dorsal body cavity and the ventral body cavity. Understand that the dorsal cavity primarily protects the nervous system, while the ventral cavity houses the organs involved in various other systems like respiratory, cardiovascular, and digestive.

For the statement 'Surrounded by the bony skull and the vertebral column,' recognize that these structures protect the brain and spinal cord, which are part of the dorsal body cavity.

For 'Includes the thoracic and abdominopelvic cavities,' recall that these two cavities are subdivisions of the ventral body cavity, which contains many vital organs.

For 'Contains the brain and spinal cord,' link this directly to the dorsal body cavity, as it encloses the central nervous system components.

For 'Contains the heart, lungs, and digestive organs,' associate these organs with the ventral body cavity, since it includes the thoracic cavity (heart and lungs) and the abdominopelvic cavity (digestive organs).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Dorsal Body Cavity

The dorsal body cavity is located along the back of the body and is protected by the skull and vertebral column. It contains the brain and spinal cord, which are part of the central nervous system. This cavity is divided into the cranial cavity (housing the brain) and the vertebral cavity (housing the spinal cord).

Ventral Body Cavity

The ventral body cavity is located at the front of the body and includes the thoracic and abdominopelvic cavities. It houses vital organs such as the heart, lungs, and digestive organs. This cavity is protected by structures like the rib cage and abdominal muscles but is not enclosed by bone like the dorsal cavity.

Subdivision of Body Cavities

Body cavities are subdivided to organize and protect organs. The dorsal cavity is subdivided into cranial and vertebral cavities, while the ventral cavity is subdivided into thoracic (chest) and abdominopelvic (abdomen and pelvis) cavities. Understanding these subdivisions helps relate specific organs to their respective cavities.

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Related Practice

Textbook Question

a. Make a diagram showing the nine abdominopelvic regions, and name each region. Name two organs (or parts of organs) that could be located in each of the named regions.

b. Make a similar sketch illustrating how the abdominopelvic cavity may be divided into quadrants, and name each quadrant.

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Textbook Question

Compare and contrast the operation of negative and positive feedback mechanisms in maintaining homeostasis. Provide two examples of variables controlled by negative feedback mechanisms and one example of a process regulated by a positive feedback mechanism.

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Textbook Question

Provide the anatomical term that correctly names each of the following body regions:

a. Arm

b. Thigh

c. Chest

d. Fingers and toes

e. Anterior aspect of the knee

Assume that the body has been sectioned along three planes: (1) a median plane, (2) a frontal plane, and (3) a transverse plane made at the level of each of the organs listed below. Which organs would be visible in only one or two of these three cases?

a. Urinary bladder

b. Brain

c. Lungs

d. Kidneys

e. Small intestine

f. Heart

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Textbook Question

Which of the following relationships is incorrect?

a. Visceral peritoneum/outer surface of small intestine

b. Parietal pericardium/outer surface of heart