Nutrients reach the surface of the skin (epidermis) through the process of ________.

A) absorbing materials applied to the surface layer of the skin
B) utilizing the products of merocrine glands to nourish the epidermis
C) filtration
D) diffusing through the tissue fluid from blood vessels in the dermis


D) diffusing through the tissue fluid from blood vessels in the dermis

Anatomy & Physiology

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Receptor-mediated endocytosis

A. moves materials out of the cell. B. is a type of passive transport. C. exhibits specificity. D. does not need ATP; the receptors supply the energy. E. occurs if oxygen is available.

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What is the dense outer covering of a long bone that contains many nerve fibers and is responsible for the pain of a fracture?

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Select the correct statement about oxygen transport in blood:

A) During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2. B) During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently. C) Increased BPG levels in the red blood cells enhance oxygen-carrying capacity. D) A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal.

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Connective tissue

A) joins together cells and tissues and transports substances. B) provides a supporting framework for the body. C) is characterized by large amounts of extracellular matrix. D) does both joins together cells and tissues and transports substances and provides a supporting framework for the body. E) has all of these characteristics.

Anatomy & Physiology