5 Written questions
5 Matching questions
- Posterior pituitary
- Luteinizing hormong (LH) and Follicle-stimulating hormone (FSH)
- a Exocrine and endocrine. Endocrine part consists of pancreatic islets each of which is composed of alpha, beta, and delta cells. Secretes Glucagon, Insulin, and Somatostatin.
- b Anterior Pituitary. stimulates milk production in lactating females
- c an extension of the nervous system and is called the neurohypophysis, continuous with the brain, secretes neurohormones
- d Anterior Pituitary. Both hormones regulate production of gametes and reproductive hormones. Testosterone in males. Estrogen and progesterone in females. GnRH from hypothalamus stimulates their secretion
- e Males, from Gonads, Testosterone- regulates production of sperm cells and function of male reproductive organs and secondary sex characteristics. Inhibin- inhibits FSH secretion
5 Multiple choice questions
- Anterior Pituitary. Cause fat breakdown and release of fatty acids into circulatory system
- Anterior Pituitary. Stimulates uptake of amino acids and conversion into proteins. Stimulates breakdown of fats and glycogen. Promotes bone and cartilage growth. Increased secretion in response to increase in amino acids, low blood glucose, or stress. Regulated by GHRH and GHIH or somatostatin
- Pancreas. Secreted by Beta cells. Target tissues: liver, adipose tissue, muscle, and satiety center of hypothalamus. Increases uptake of glucose and amino acids by cells. (in order to decrease blood glucose levels!)
- Gradual decrease in secretory activity of some glands- GH, Melatonin, Thyroid hormones, Kidneys secrete less renin. Familial tendency to develop Type II diabetes.
- Posterior Pituitary. Also called vasopressin, promotes water retention by kidneys. Secretion rate changes in response to alterations in blood osmolality and blood volume. Lack of ADH secretion is a cause of diabetes insipidus
5 True/False questions
Androgens → Zona reticularis, Androstenedione and testosterone. Cause the development of male secondary sexual characteristics
Somatostatin → Posterior Pitutitary. Associated with pregnancy and birth. Promotes uterine contractions during delivery. Causes milk ejection in lactating women by stimulating smooth muscle-like cells associated with the alveoli of mammary glands. Also associated with the contraction of the smooth muscle of the uterus during menses and sexual intercourse. Stretch of the uterus, mechanical stimulation of the cervix, and stimulation of the breast nipples as in nursing stimulates oxytocin secretion. Not much is known about the effects of oxytocin in males
Hormonal regulation soon after a meal → Decreasing blood glucose levels. Sympathetic stimulation causes decreased insulin secretion, increase glucagon secretion, increase in GH, cortisol, and epinephrine secretion.
Glucagon → Pancreas. Secreted by Alpha cells. Target tissue is liver. Causes breakdown of glycogen and fats for glucose energy. Increases glucose synthesis in liver. (to increase blood glucose levels!)
Glucocorticoids → Zona glomerulosa, Aldosterone produced in greatest amounts causes increased rate of sodium reabsorption by kidneys increasing sodium levels in the blood