Which of the following statements is true?
A. Collagen fibers provide strength to dense connective tissue.
B. Dense connective tissue has a fluid matrix.
C. Mast cells are found in abundance in dense connective tissue.
D. Elastic tissue is flexible, but not stretchy.
E. Areolar tissue is tightly packed.
A
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When the diaphragm contracts, lung volume ________
A) Decreases B) Increases C) Changes depending on circumstances D) Stays the same
Match the following systems to their functions:
A) Skeletal B) Nervous C) Integumentary D) Muscular 1) Directly causes mechanical motion. 2) Responds to environmental changes by transmitting electrical impulses. 3) Provides support and levers for muscles to work on. 4) Protects underlying organs from mechanical damage and synthesizes vitamin D.
Two or more polypeptides chains combine to form a complex structure called a ________
A) primary structure B) beta-pleated sheet C) secondary structure D) tertiary structure E) quaternary structure
Erectile dysfunction prevents ejaculation in most cases.
Answer the following statement true (T) or false (F)