Which of the following pathways best represents the expected flow of blood from the human heart to an organ?

A. Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ

B. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries of the organ

C. Blood pumped from the heart first enters versus that then narrow to form venules that deliver blood to arteries to the organ

D. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries

Answer Explanation:

From the heart, blood flows through major arteries, which then branch to give rise to arterioles, which then divide into capillaries that deliver blood to the target organ.

Therefore, the Correct Answer is B.

Q #1: Which of the following molecules contains the fewest covalent bonds?

A. Chlorine molecule

B. Ammonia molecule

C. Methane molecule

D. Water molecule

Answer Explanation

A chlorine molecule contains the fewest covalent bonds among the options provided. It consists of two chlorine atoms bonded together by a single covalent bond. Compared with the other options, ammonia has three covalent bonds, methane has 4 while water has 2.
Q #2: Which of the following types of cells stimulates other immune cells to attack and destroy foreign agents?

A. Cytotoxic T-cells

B. Plasma cells

C. Natural killer cells

D. Helper T-Cells

Answer Explanation

Helper T cells are important cells that stimulate the action of other immune cells. For instance, they not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Q #3: Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?

A. Pituitary gland

B. Thyroid gland

C. Adrenal glands

D. Ovaries

Answer Explanation

The pituitary gland produces prolactin, which regulates milk production

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Which of the following pathways best represents the expected flow of blood from the human heart to an organ?

More Questions on TEAS 7 Science

Q #1: Which of the following molecules contains the fewest covalent bonds?

Answer Explanation

Q #2: Which of the following types of cells stimulates other immune cells to attack and destroy foreign agents?

Answer Explanation

Q #3: Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?

Answer Explanation

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