
Concept explainers
(a)
To determine: The differences between lumen and wall.
Introduction: The human body is made up of cells. The cells with similar structure and functions combine together to form tissues. A group of tissues which perform similar functions and have similar structure is known as the organ. The lumen and wall are part of the organs formed.
(b)
To determine: The differences between cytoplasm and cytosol.
Introduction: Cell is the basic structural and functional unit for every organism. It is divided into different compartments. The cell is surrounded by a cell membrane which allows only selected substances to exit or enter into the cell’s internal compartment. Cytoplasm and cytosol are part of the internal compartments of the cell.
(c)
To determine: The differences between myosin and keratin.
Introduction: Cytoskeleton is a three-dimensional structure made up of cytoskeleton proteins (actin fibers, intermediate filaments, and microtubules). It is flexible and can change according to the requirement of the cell. The cytoskeleton proteins fibers are present throughout the cytoplasm. Myosin and keratin are both intermediate filaments

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Chapter 3 Solutions
Pearson eText Human Physiology: An Integrated Approach -- Instant Access (Pearson+)
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