10. Peripheral Glands

22. Exophthalmos of Grave’s disease
Enlarged thyroid (goiter) from iodine deficiency

25. Increases Ca2 uptake in intestines Active vitamin D
Figure
Increases Ca2 uptake in intestines
Active vitamin D
Stimulates Ca2 uptake in kidneys
PTH
Parathyroid gland (behind thyroid)
Stimulates Ca2 release from bones
Figure The roles of parathyroid hormone (PTH) in regulating blood calcium levels in mammals.
STIMULUS: Falling blood Ca2 level
Blood Ca2 level rises.
Homeostasis: Blood Ca2 level (about 10 mg/100 mL)