1. Endocrine and Integumentary Systems
Session 39

2. Objectives Describe the components of the integumentary system
Describe the locations and major hormones associated with the essential glands of the endocrine system
Analyze the relationship between the endocrine system and nervous system

3. Receptors – more detail in Neurophys next semester, located in the dermis and subcutaneous layer
mechanoreceptors, chemoreceptors, thermoreceptors (nociceptors)
Hair follicles, muscles, sebaceous glands – mostly dermis, follicle extends into subcutaneous layer
Blood flow sustained through dermis
Epidermis allows a few structures through but is avascular (oxygen exchanged with air), made of keratinocytes and melanocytes
Overall functions: barrier to pathogens, regulates water loss, heat regulation, sensation, synthesis and storage of vitamin D
Dermis & epidermis is cuticle

4. Hormones: Mechanism of Action
Target cells
Receptors

5. Endocrine Glands Pituitary Gland Pineal Gland Thyroid Thymus
“Master Gland”
Growth Hormone, prolactin, adrenocorticotropic hormone, thyroid- stimulating hormone, luteinizing hormone, follicle-stimulating hormone, oxytocin, antidiuretic hormone
Pineal Gland
Melatonin
Thyroid
Hormones involved in metabolism
Thymus
Hormones released during puberty, mainly involved in immunity

6. Endocrine Glands Pancreas Adrenal Testes Ovaries
Insulin, blood sugar control
Adrenal
Adrenaline (epinephrine), blood sugar control
Testes
Testosterone
Ovaries
Estrogen and progesterone

7. Locations Pineal Pituitary Thyroid Thymus Adrenals
Pancreas (Shown Wrong!)
Ovary
Teste

8. Research Hormone Functions
5 minutes – prepare for a brief presentation. What does it do? Where is it found? What is an interesting piece of information about this hormone?
growth hormone
prolactin
adrenocorticotropic hormone
thyroid-stimulating hormone
luteinizing hormone
follicle-stimulating hormone
oxytocin
antidiuretic hormone
Insulin
Adrenaline
Testosterone
Estrogen
progesterone

9. Hormone Functions growth hormone prolactin adrenocorticotropic hormone
thyroid-stimulating hormone
luteinizing hormone
follicle-stimulating hormone
oxytocin
antidiuretic hormone
insulin
adrenaline
testosterone
estrogen
progesterone

10. Endocrine & Nervous Systems
Nervous system – fast, short lasting responses
Endocrine system – slower, longer lasting responses
Adrenaline/epinephrine is both hormone and neurotransmitter – difference is which receptor it gets to.

11. Objectives Describe the components of the integumentary system
Describe the locations and major hormones associated with the essential glands of the endocrine system
Analyze the relationship between the endocrine system and nervous system