Questions and Answers
A midsagittal plane vertically divides the body through the midline into two equal left and right portions.
True
A horizontal or transverse plane is any plane dividing the body into left and right portions.
False
A sagittal plane is any plane parallel to the midsagittal or median plane, vertically dividing the body into unequal right and left portions.
True
The organs of any cavity are referred to as the viscera.
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The term parietal refers to the walls of a cavity.
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The ventral cavity contains organs of the nervous system.
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It is useful to describe the body as having imaginary curved geometric surfaces passing through it called planes.
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Organs are organized into tissues.
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A cell performs all the activities necessary to maintain life except for excretion.
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The cells in muscle tissue are so long that they are often referred to as muscle fibers.
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Cardiac muscle is found only in the heart.
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Pleural is the term that refers to the covering of the lungs.
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Our liver converts toxic ammonia to a harmless substance called urea through its enzymes.
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ATP is the high-energy fuel molecule that the cell needs in order to function.
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Water serves as a medium or solvent in which other reactions occur, and water is referred to as the universal solvent.
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Chloride (Cl-) is necessary for muscle contraction, as well as for building strong bones.
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Energy storage is the more common function of carbohydrates.
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Enzymes are protein catalysts that block a chemical reaction.
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The plasma membrane of cells is a selectively permeable membrane.
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Study Notes
Body Planes and Divisions
- The midsagittal plane divides the body into two equal left and right halves.
- A horizontal or transverse plane separates the body into superior (upper) and inferior (lower) portions, not left and right.
- A sagittal plane is any vertical plane parallel to the midsagittal plane, dividing the body into unequal right and left portions.
Anatomical Terminology
- Viscera refers to the organs located within a body cavity.
- The term parietal describes the walls that enclose a cavity.
Body Cavities
- The ventral cavity is associated with organs that help maintain homeostasis, not specifically the nervous system.
Body Organization
- Tissues are the fundamental building blocks that organize to form organs, not the other way around.
- Cells are responsible for all necessary life activities, including excretion.
Muscle Tissue
- Muscle fibers are elongated cells found in muscle tissue.
- Cardiac muscle is unique to the heart.
Important Physiological Processes
- The pleural membrane covers the lungs.
- The liver converts toxic ammonia to urea, a non-toxic waste product.
- ATP serves as the high-energy molecule required for cellular functions.
- Water is the universal solvent, facilitating most chemical reactions in the body.
Nutritional Components
- Chloride (Cl-) is crucial for nervous transmission rather than muscle contraction or bone strength.
- The primary role of carbohydrates is energy storage, with additional functions in cell reinforcement.
Enzymatic Functions
- Enzymes are proteins that act as catalysts, enhancing the rate of chemical reactions without being consumed in the process.
- The plasma membrane of cells is selectively permeable, controlling the passage of substances in and out of the cell.
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Description
Test your knowledge of human anatomy with this true or false quiz on physiological planes. Determine whether statements about midsagittal and transverse planes are correct. Perfect for students in physiology courses!
