Describe the main structural characteristics of the four basic tissues
What will be an ideal response?
a. epithelial tissue—cover surfaces, line tubular organs, no blood vessels, basement membrane;
b. connective tissue—fibers and ground substance make up an extensive extracellular matrix;
c. muscle tissue—shortened fibers during contraction, transverse striations (except for smooth);
d. nervous tissue—neurons, neuroglia.
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The epithelial cells that form the inner lining of the small intestine
A. remain where they are first formed. B. are replaced every few days. C. are not able to reproduce. D. are cube-shaped.
Which of the following contains collagen and yellow elastic fibers?
a. epidermis b. dermis
The cervical plexus
A) gives rise to the phrenic nerve, which provides the sole motor supply to the diaphragm. B) consists of the ventral rami of spinal nerves C1—C4, and some fibers from C5. C) gives rise to motor branches that innervate the muscles of the neck. D) gives rise to branches that supply the skin of the neck, shoulder, and upper chest region. E) All of the answers are correct.
The maxilla forms the
A. roof of the orbit. B. lateral wall of the orbit. C. floor of the orbit. D. posterior wall of the orbit. E. medial wall of the orbit.