Connect with LearnSmart Labs Access Card for Seeley's A&P
Connect with LearnSmart Labs Access Card for Seeley's A&P
11th Edition
ISBN: 9781259807657
Author: Cinnamon VanPutte, Jennifer Regan, Andrew F. Russo Dr., Rod R. Seeley Dr.
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 18, Problem 1RAC

The pituitary gland
a. develops from the floor of the brain.
b. develops from the roof of the mouth.
c. is stimulated by neurohormones produced in the midbrain.
d. secretes only three major hormones.
e. Both a and b are correct.

Expert Solution & Answer
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Summary Introduction

Introduction:

The pituitary gland secretes hormones that fall under two categories: posterior pituitary hormones and anterior pituitary hormones. They have varying effects on the body in several ways.

Answer to Problem 1RAC

The correct answer is option (e) Both a and b are correct.

Explanation of Solution

Explanation/justification for the correct answer:

Option (e) both a and b are correct. The posterior pituitary gland embryonically develops from an outgrowth of the hypothalamus region of the brain. Hypothalamus lies on the floor of the brain. The anterior pituitary gland develops as an outgrowth of the roof of the embryonic oral cavity. So, the correct answer is option (e).

Explanation for incorrect answer:

Option (a) develops from the floor of the brain. The posterior pituitary gland develops from the floor of the brain. However, the anterior pituitary gland develops from the roof of the oral cavity. So, this is an incorrect answer.

Option (b) develops from the roof of the mouth. The anterior pituitary gland develops from the roof of the oral cavity. However, the posterior pituitary gland develops from the floor of the brain. So, this is an incorrect answer.

Option (c) is stimulated by neurohormones produced in the midbrain. The pituitary gland is stimulated by the hypothalamus. So, this is an incorrect answer.

Option (d) secretes only three major hormones. The pituitary gland produces more than three major hormones. For example, antidiuretic hormone, oxytocin, growth hormone, TSH (thyroid stimulating hormone), and prolactin. So, this is an incorrect answer.

Conclusion

The posterior pituitary gland develops from the floor of the brain. The anterior pituitary gland develops from the roof of the oral cavity. Hence, the correct answer is option (e) Both a and b are correct.

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Chapter 18 Solutions

Connect with LearnSmart Labs Access Card for Seeley's A&P

Ch. 18.2 - Prob. 11AYPCh. 18.2 - Prob. 12AYPCh. 18.2 - Prob. 13AYPCh. 18.2 - What effects do stress, blood amino acid levels,...Ch. 18.2 - Describe the effects of GH on its target tissues.Ch. 18.2 - Prob. 16AYPCh. 18.2 - Prob. 17AYPCh. 18.2 - Prob. 18AYPCh. 18.2 - For each of the following hormones secreted by the...Ch. 18.2 - Prob. 20AYPCh. 18.2 - What is a gonadotropin? Name two...Ch. 18.3 - Prob. 22AYPCh. 18.3 - Prob. 23AYPCh. 18.3 - How are the thyroid hormones transported in the...Ch. 18.3 - Prob. 25AYPCh. 18.3 - Starting in the hypothalamus, explain how chronic...Ch. 18.3 - Prob. 27AYPCh. 18.3 - Prob. 28AYPCh. 18.3 - Prob. 29AYPCh. 18.3 - What conditions cause hyperthyroidism? Describe...Ch. 18.3 - Prob. 31AYPCh. 18.4 - Prob. 32AYPCh. 18.4 - Prob. 33AYPCh. 18.4 - Prob. 34AYPCh. 18.4 - Prob. 35AYPCh. 18.4 - What can cause hypoparathyroidism?Describe the...Ch. 18.4 - Prob. 37AYPCh. 18.5 - Where are the adrenal glands located? Describe the...Ch. 18.5 - Name two hormones secreted by the adrenal medulla,...Ch. 18.5 - Prob. 40AYPCh. 18.5 - Prob. 41AYPCh. 18.5 - Name the target tissue ofaldosterone, and list...Ch. 18.5 - Prob. 43AYPCh. 18.5 - Prob. 44AYPCh. 18.5 - List the possible causes of hypersecretion of...Ch. 18.5 - Prob. 46AYPCh. 18.6 - Prob. 47AYPCh. 18.6 - Prob. 48AYPCh. 18.6 - How does insulin affect the satiety center of the...Ch. 18.6 - Prob. 50AYPCh. 18.6 - Prob. 51AYPCh. 18.7 - Prob. 52AYPCh. 18.7 - Prob. 53AYPCh. 18.7 - Prob. 54AYPCh. 18.8 - Prob. 55AYPCh. 18.8 - List the hormones secreted by the ovaries, and...Ch. 18.8 - What hormones from the anterior pituitary gland...Ch. 18.8 - Prob. 58AYPCh. 18.9 - Prob. 59AYPCh. 18.9 - Prob. 60AYPCh. 18.10 - What hormone is secreted by the thymus? What is...Ch. 18.10 - Prob. 62AYPCh. 18.10 - Prob. 63AYPCh. 18.10 - Prob. 64AYPCh. 18.10 - List examples of paracrine chemical messengers...Ch. 18.10 - Prob. 66AYPCh. 18.11 - Prob. 67AYPCh. 18.11 - Prob. 68AYPCh. 18 - The pituitary gland a. develops from the floor of...Ch. 18 - The hypothalamohypophysial portal system a....Ch. 18 - Prob. 3RACCh. 18 - Prob. 4RACCh. 18 - Prob. 5RACCh. 18 - Prob. 6RACCh. 18 - Prob. 7RACCh. 18 - Hypersecretion of growth hormone a.results in...Ch. 18 - Prob. 9RACCh. 18 - Prob. 10RACCh. 18 - Prob. 11RACCh. 18 - Prob. 12RACCh. 18 - Prob. 13RACCh. 18 - Parathyroid hormone secretion increases in...Ch. 18 - Prob. 15RACCh. 18 - Prob. 16RACCh. 18 - In the condition in which a benign tumor results...Ch. 18 - Which of these is nor a hormone secreted by the...Ch. 18 - Prob. 19RACCh. 18 - Prob. 20RACCh. 18 - Prob. 21RACCh. 18 - Within the pancreas, the pancreatic islets produce...Ch. 18 - Insulin increases a. the uptake of glucose by its...Ch. 18 - Prob. 24RACCh. 18 - Prob. 25RACCh. 18 - Prob. 26RACCh. 18 - Prob. 27RACCh. 18 - Prob. 28RACCh. 18 - Prob. 29RACCh. 18 - Prob. 30RACCh. 18 - Prob. 1CTCh. 18 - Prob. 2CTCh. 18 - A patient complains of headaches and visual...Ch. 18 - Prob. 4CTCh. 18 - Prob. 5CTCh. 18 - Prob. 6CTCh. 18 - Prob. 7CTCh. 18 - Predict some of the consequences of exposure to...Ch. 18 - Katie was getting nervous. At 16, she was the only...
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