micturition involves a combination of
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ATI TEAS 7

TEAS version 7 quizlet science

1. During micturition, the process involves a combination of:

Correct answer: D

Rationale: During micturition, which is the process of urination, both voluntary and involuntary muscle contractions are involved. Voluntary muscle contractions include the relaxation of the external urethral sphincter, allowing the release of urine, while involuntary muscle contractions involve the detrusor muscle in the bladder contracting to expel urine. Choices A, B, and C are incorrect because micturition is not solely dependent on gravity, voluntary muscle contractions, or involuntary muscle contractions alone. The correct answer is D as both types of muscle contractions are necessary for the complete process of urination.

2. Which of the following nerves has the longest axon in the human body?

Correct answer: C

Rationale: The sciatic nerve contains the longest axon in the human body, extending from the lower back down the leg. This nerve is responsible for innervating the muscles of the lower limb. The dorsal root ganglion and laryngeal nerve do not possess axons as long as the sciatic nerve, making them incorrect choices. Therefore, the correct answer is C, the sciatic nerve.

3. What is the involuntary muscle tissue found in the walls of blood vessels and organs like the stomach and intestines?

Correct answer: C

Rationale: Smooth muscle is the correct answer. It is the involuntary muscle tissue found in the walls of blood vessels and organs like the stomach and intestines. Smooth muscle is responsible for various involuntary movements in the body, such as peristalsis in the digestive system and regulating blood flow in blood vessels. Skeletal muscle is voluntary and attached to bones for movement. Cardiac muscle is specific to the heart and not found in blood vessel walls or organs like the stomach and intestines. Striated muscle refers to both skeletal and cardiac muscle due to their striped appearance under a microscope, but it does not specifically describe the involuntary muscle tissue in the walls of blood vessels and organs as asked in the question.

4. Which element shares the same group (family) on the periodic table with helium (He)?

Correct answer: A

Rationale: Neon (Ne) shares the same group (family) on the periodic table with helium (He). Both helium and neon belong to Group 18 (Noble Gases) due to their complete and stable outer electron shells, making them chemically inert. Boron (B), Carbon (C), and Oxygen (O) are not in the same group as helium. Boron is in Group 13, Carbon is in Group 14, and Oxygen is in Group 16 on the periodic table.

5. Which of the following is a function of the large intestine?

Correct answer: D

Rationale: The correct answer is D, 'All of the above.' The large intestine performs various functions, including the absorption of water, production of vitamin K, and production of some B vitamins. Water absorption is a crucial function of the large intestine, helping to concentrate waste material into feces. Additionally, the large intestine hosts beneficial bacteria that produce vitamin K and some B vitamins, which are absorbed into the body. Choices A, B, and C individually represent specific functions of the large intestine, while choice D correctly encompasses all these functions, making it the most comprehensive and accurate answer.

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