Lab 9 The Endocrine System BIO201L
Student Name:
Access Code (located on the lid of your lab kit): AC-54NRLKM
Pre-Lab Questions
1. What is the function of the endocrine system?
Function of the body manage by the endocrine system. Its made from glands and they produce
hormone that balance the body. These hormone balance metabolism, sexual development and growth.
This sys- tem has another function to balance ion levels like blood Ph, ca2+, Na+, K+, mange water
balance and blood glucose.
2. Research two types of hormones and describe the mode of action for each.
ADH created in hypothalamus and stored in the posterior pituitary gland and balance water in blood.
ADH helps water reabsorption. ADH works when extra water used blood vessels are tighten and blood
pressure higher. Oxytocin stimulates uterine contraction by stimulating smooth muscle to shrink in
uterus. Also mix with milk comedown in nursing, smooth muscle like cells around milk dicts in mama-
mary glands. Oxytocin also plays role in bonding and maternal nuturing.
3. Which gland is both endocrine and exocrine?
The pancreases is the gland is both endocrine and exocrine.
4. Which hormones control the fight or flight response?
Adrenaline hormone controls the fight or flight response.
5. What is type 1 diabetes and what is the treatment for this disease?
IN type 1 diabetes our body doesn’t’t produce enough insulin from pancreases. As treatment insulin
shots needs to given daily to better control blood sugar. Glucose monitoring needs more often and diet
and exercise also plays important role to have control on blood sugar.
6. Describe how Ca2+ levels in the blood are regulated by hormones.
Ca2+ levels are regulated by parathyroid hormone that is produce by parathyroid gland. Low blood cal-
cium levels make cause to release this hormone.it restore osteoclasts for calcium to go in blood.
7. How do the nervous and endocrine systems work together to maintain homeostasis of the body?
Both are control systems. Common connection between these two is hypothalamus. Hypothalamus con-
trolled by homeostasis and has producing and inhibiting hormones.
Experiment 1: Microscopic Anatomy of the Endocrine System
Table 2: Experiment 1 Image Observations
Image Type Image Observations
Thyroid Gland Follicular cells line the colloid. These cells around colloid firmly fixed.
, Lab 9 The Endocrine System BIO201L
Image Type Image Observations
Packed cord like cells, the thyroid follicles are so close to parathyroid
Parathyroid Gland
gland chief and oxyphll cells shown.
Tightly fixed cells, interlobular ducts and inferior to alpha, beta and delta
Pancreas
cells.
Adrenal Gland Cortex and medulla are present, by zooming in able to see some layers of
adrenal gland cells are vacuolated and you can also see the capillary.
Anterior and posterior pituitary gland are present with posterior shows like
Pituitary Gland
smooth and anterior rough.
Anterior Pituitary Epithelial tissue, with groups of secretory cells.
Gland
Post-Lab Questions
1. Label the items in the following slide images based on your observations.
A- colloid
B- follicular cells.
Student Name:
Access Code (located on the lid of your lab kit): AC-54NRLKM
Pre-Lab Questions
1. What is the function of the endocrine system?
Function of the body manage by the endocrine system. Its made from glands and they produce
hormone that balance the body. These hormone balance metabolism, sexual development and growth.
This sys- tem has another function to balance ion levels like blood Ph, ca2+, Na+, K+, mange water
balance and blood glucose.
2. Research two types of hormones and describe the mode of action for each.
ADH created in hypothalamus and stored in the posterior pituitary gland and balance water in blood.
ADH helps water reabsorption. ADH works when extra water used blood vessels are tighten and blood
pressure higher. Oxytocin stimulates uterine contraction by stimulating smooth muscle to shrink in
uterus. Also mix with milk comedown in nursing, smooth muscle like cells around milk dicts in mama-
mary glands. Oxytocin also plays role in bonding and maternal nuturing.
3. Which gland is both endocrine and exocrine?
The pancreases is the gland is both endocrine and exocrine.
4. Which hormones control the fight or flight response?
Adrenaline hormone controls the fight or flight response.
5. What is type 1 diabetes and what is the treatment for this disease?
IN type 1 diabetes our body doesn’t’t produce enough insulin from pancreases. As treatment insulin
shots needs to given daily to better control blood sugar. Glucose monitoring needs more often and diet
and exercise also plays important role to have control on blood sugar.
6. Describe how Ca2+ levels in the blood are regulated by hormones.
Ca2+ levels are regulated by parathyroid hormone that is produce by parathyroid gland. Low blood cal-
cium levels make cause to release this hormone.it restore osteoclasts for calcium to go in blood.
7. How do the nervous and endocrine systems work together to maintain homeostasis of the body?
Both are control systems. Common connection between these two is hypothalamus. Hypothalamus con-
trolled by homeostasis and has producing and inhibiting hormones.
Experiment 1: Microscopic Anatomy of the Endocrine System
Table 2: Experiment 1 Image Observations
Image Type Image Observations
Thyroid Gland Follicular cells line the colloid. These cells around colloid firmly fixed.
, Lab 9 The Endocrine System BIO201L
Image Type Image Observations
Packed cord like cells, the thyroid follicles are so close to parathyroid
Parathyroid Gland
gland chief and oxyphll cells shown.
Tightly fixed cells, interlobular ducts and inferior to alpha, beta and delta
Pancreas
cells.
Adrenal Gland Cortex and medulla are present, by zooming in able to see some layers of
adrenal gland cells are vacuolated and you can also see the capillary.
Anterior and posterior pituitary gland are present with posterior shows like
Pituitary Gland
smooth and anterior rough.
Anterior Pituitary Epithelial tissue, with groups of secretory cells.
Gland
Post-Lab Questions
1. Label the items in the following slide images based on your observations.
A- colloid
B- follicular cells.
