Which layer of the epidermis is composed of flattened, dead, keratin-filled cells?
A) stratum spinosum
B) stratum granulosum
C) stratum basale
D) stratum corneum
E) stratum lucidum
D
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If a bone is immersed in a weak acid such as vinegar for several days, its inorganic components will dissolve. What will be the result of such an experiment?
A. The bone will dissolve completely. B. The compact bone will dissolve, leaving only the inner spongy bone. C. The bone will become extremely brittle. D. The bone will become soft and bendable. E. The spongy bone will dissolve, leaving only the outer compact bone.
Lymphatic capillaries are also called __________ lymphatics.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Binary fission in bacteria, where a single parent cell duplicates its genetic material and then splits into two daughter cells, is an example of sexual reproduction. 2. The X chromosomes from a female child are inherited from both the mother and father. 3. The sex of a zygote is determined by whether the egg is carrying an X or Y chromosome. 4. In the female fetus, the absence of testosterone results in the development of the external genitalia into clitoris, labia minora, and labia majora. 5. The uterus is a thick muscular chamber inferior to the urinary bladder. 6. The ovarian cycle typically lasts about 28 days, with day 1 considered to be the first day after ovulation.
The periphery of a myelinating neurolemmocyte that contains its cytoplasm and nucleus is called the ________.
Fill in the blank(s) with the appropriate word(s).