题目内容

Which of the following best describes an endocrine gland?以下哪一种最能描述内分泌腺？

A gland with secretions that diffuse into the bloodstream.
B. A gland which releases its secretions into ducts.
C. A gland which is unicellular.
D. An avascular gland (i.e. has no blood supply).
E. A gland which produces mucous.

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A. TRUE
B. FALSE

A. Basal lamina or basement membrane.
B. Connective tissue.
C. Tight junctions.
D. Is not attached to anything.
E. Blood vessels.

A. TRUE
B. FALSE

A. TRUE
B. FALSE