The Endocrine System

BIOL 2402, A&P II Laboratory
Minimum required structures and slides for:
Exercise 27: Functional Anatomy of the Endocrine Glands
Dissection Exercise 3: Identification of Selected Endocrine Organs of the Cat
A. Structures on models:
1. On a brain model
anterior and posterior pituitary gland
pineal gland
2. On torso and other models:
thyroid gland
adrenal glands
parathyroid glands pancreas
thymus (thymus is on the “Thin Man” poster at the front of the room)
B. Microscope slides and structures to ID on each slide
1. Slide # 4 thyroid gland
a. colloid-filled follicles
b. follicle cells
c. parafollicular cells (C cells)
2. Slide #5 parathyroid gland
a. chief cells (small cells)
3. Slide #6 has the thyroid and parathyroid glands next to each other
a. look at this slide to compare/contrast these two glands
4. Slide # 69 pancreas
a. acinar cells (exocrine cells)
b. pancreatic islets (endocrine cells);
5. Slide # 1 pituitary gland
a. anterior pituitary lobe
if stained properly: 1. acidophils
b. posterior pituitary lobe
1. pituicytes
2. basophils
6. Slide #9 adrenal gland
a. adrenal cortex
1. zona glomerulosa
2. zona fasciculata
3. zona reticularis
b. adrenal medulla
note: gonad histology will be covered in Exercise 47
C. Structures to identify for the cat dissection
1. thyroid
4. adrenal gland (not same as in human)
2. thymus
5. ovary in female cat
3. pancreas
6. testis in male cat
Note: there will be a dissected demonstration cat for all 2402 lab sections to use
The cat will be stored in the refrigerator in the supply room in A-309