Endocrine System Practical Dissection Images - PDF

THE ENDOCRINE SYSTEM PRACTICAL DISSECTION IMAGES  PRACTICAL OBJECTIVES Understand the difference between exocrine and endocrine glands Identify the main endocrine glands in the body Identify their location in the body Know the hormones each gland secretes  What is...

THE ENDOCRINE SYSTEM PRACTICAL DISSECTION IMAGES  PRACTICAL OBJECTIVES Understand the difference between exocrine and endocrine glands Identify the main endocrine glands in the body Identify their location in the body Know the hormones each gland secretes  What is the difference between exocrine and endocrine glands? Endocrine glands – secrete hormones directly into the blood stream & Exocrine glands – secretes products directly into ducts PITUITARY GLAND  PITUITARY GLAND Located in the pituitary fossa of the sella turcica. Locate the sella turcica & pituitary fossa PITUITARY FOSSA  Take note of the structures related to this gland. What hormones are secreted by the pituitary gland? Adrenocorticotrophic hormone (ACTH) Thyroid-stimulating hormone (TSH) Luteinising hormone (LH) Follicle-stimulating hormone (FSH) Prolactin (PRL) Growth hormone (GH) Melanocyte-stimulating hormone (MSH HYPOTHALAMUS The Hypothalamus controls the endocrine system via several pathways. What are the main functions of the thalamus and hypothalamus? The THALAMUS regulates sleep, alertness and wakefulness, whereas the HYPOTHALAMUS regulates body temperature, hunger, fatigue and metabolic processes in general. Identify the related structures of the hypothalamus LABELLED A-C THALAMUS PINEAL GLAND PITUITARY GLAND NOW TEST YOURSELF: Identify the endocrine glands in this region THYROID, PARATHYROID& THYMUS GLANDS  Thyroid left lobe Isthmus  What hormones are secreted by the thyroid gland? Triiodothyronine, also known as T3. Tetraiodothyronine, also called thyroxine or T4. Calcitonin. What gland do you think this is? THYMUS GLAND The Thymus gland is a lobulated lymphoid organ located in the thoracic cavity. PANCREAS & ADRENAL GLANDS What do the insulin and glucagon hormones do? Insulin – lowers blood glucose Glucagon – increases blood glucose  What hormones does the adrenal cortex and adrenal medulla secrete? Adrenal medulla – Epinephrine (Fight/flight response) Adrenal cortex – Glucocorticoids (Anti-inflammatory/ stress response)