Exam 5: Principles of Endocrinology: The Central Endocrine Glands

Which of these statements describes hormones

How does growth hormone exert its effects on growth

Hydrophilic hormones exert their effects primarily by activating second-messenger systems within their target cells.

A tropic hormone acts primarily on nonendocrine tissues.

Hormones may be steroids, peptides, or amines.

Growth hormone is controlled by both releasing and inhibiting hormones from the hypothalamus.

Steroid hormones are derived from ____________________.

The most common site for metabolism of hormones is the ____________________.

Under which of these circumstances is synergism occurring

Match the hormones, labelled a. through f., with their activities. (Options may be used more than once or not at all.) -enhances H₂O a.retention by the kidneys

TSH controls the amount of testosterone secreted by the testes.

Vasopressin is a vasoconstrictor substance.

Which of these circumstances is the cause of too little activity of a particular hormone

Which of these statements applies to the hypothalamic-hypophyseal portal system

Which of these pituitary hormones is NOT involved in reproductive physiology

Which of these statements refers to the permissiveness of hormones

Match the hormones, labelled a. through f., with their activities. (Options may be used more than once or not at all.) -exerts a pressor effect on arterioles

Describe the primary factors involved in growth.

Negative-feedback control tends to maintain hormone levels at a relatively constant set point, whereas neuroendocrine reflexes usually produce a sudden increase in hormone secretion in response to a specific stimulus.

A(n) ____________________ hormone stimulates the effect of another endocrine gland.