Answer the following statements true (T) or false (F)
1. In general, as blood viscosity drops, blood pressure increases.
2. Contracting skeletal muscles and breathing help the veins return blood to the heart.
3. The apex of the heart lies on the diaphragm muscle.
4. The muscle tissue of the heart is called myocardium.
5. The visceral pericardium is also called the endocardium.
1. FALSE
2. TRUE
3. TRUE
4. TRUE
5. FALSE
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Milk production in the mammary glands
A) begins to occur at the start of each monthly cycle, but only continues if pregnancy occurs. B) is initiated during the birth process. C) is stimulated by a combination of hormones including prolactin, growth hormone, and human placental lactogen. D) occurs by the process of meiosis. E) None of the answers are correct.
A pony stands under __________- hands in height
Fill in the blank(s) with correct word
The brain, spinal cord, and lens and cornea of the eye develop from the primary germ layer called the:
a. ectoderm b. mesoderm c. endoderm d. none of the above
Matter is composed of elements, which are composed of ________.
A. organic molecules B. inorganic molecules C. chemicals D. atoms