Define and distinguish between necrosis and apoptosis, and give specific examples of each.
What will be an ideal response?
Necrosis is cell death as a result of damage from toxins, physical trauma, or lack of oxygen; damaged cells release chemicals that may damage neighboring cells. An example is death of skin cells as a result of sunburn. Apoptosis is programmed cell death, which is an internally regulated process and does not involve neighboring cells unless they too are so programmed. An example is the loss of skin webbing between fingers and toes in a fetus.
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Compared to kidney structure in marine fish, freshwater fish have
A) A more complex glomerulus. B) A less complex glomerulus. C) An equally complex glomerulus. D) No glomerulus.
When the surrounding temperature is low, heat is lost from the body by means of
a. radiation. b. conduction/convection. c. nonshivering thermogenesis. d. both radiation and conduction/convection are correct. e. all of these answers.
While viewing a colorful painting in a museum, you will mostly use your __________.
Fill in the blank(s) with the appropriate word(s).
Which lymphatic organ located anteriorly to the heart assists in the development of the immune system?
A) thymus gland B) spleen C) right lymphatic duct D) axillary lymph nodes