4 03 Remember the structures of the endocrine

4. 03 Remember the structures of the endocrine system 1

4. 03 Remember the structures of the endocrine system • What are the structures of the • endocrine system? 4. 03 Remember the structures of the endocrine system 2

4. 03 Remember the structures of the endocrine system Gland- any organ that produces a secretion called hormones • Endocrine – • ductless glands • secrete hormones directly into blood • only act on target organ cells 4. 03 Remember the structures of the endocrine system 3

The Pituitary Gland • Called the master gland • Size of a grape • Located at the base of the brain • Divided into the anterior and posterior lobes 4. 03 Remember the structures of the endocrine system 4

Thyroid Gland • • Butterfly shaped Located in the anterior neck on either side of the larynx, over the trachea 5

Parathyroid Glands • • • Four glands Size of a grain of rice Attached to the posterior thyroid 4. 03 Remember the structures of the endocrine system 6

Thymus Gland • • • Serves both the endocrine system and the lymphatic system Located posterior to the sternum Large during childhood but will atrophy with age. 4. 03 Remember the structures of the endocrine system 7

Adrenal Gland • There are two adrenal glands. • One on top of each kidney. - Cortex – outside - Medulla – inside 4. 03 Remember the structures of the endocrine system 8

Gonads – (Sex glands) Testes (male) • Also part of the reproductive system • Two testes located in the hollow sac of the scrotum 4. 03 Remember the structures of the endocrine system 9

Gonads – (Sex glands) Ovaries (female) • Also part of the reproductive system • One on each side of the uterus in the pelvic cavity • Size and shape of an almond 4. 03 Remember the structures of the endocrine system 10

Pancreas • • Located behind the stomach Both an endocrine and exocrine gland • • Exocrine in Digestive System The endocrine portion is the Islets of Langerhans (regions of cells found in pancreas) 4. 03 Remember the structures of the endocrine system 11

4. 03 Remember Structures of the endocrine system • What are the structures of the • endocrine system? 4. 03 Remember the structures of the endocrine system 12