Quiz 2 Review Flashcards
(41 cards)
Endocrine Gland composition
Made of cells that produce hormones into the intercellular spaces surrounding tissues. Hormones are picked up by blood and taken to target cells.
Exocrine Gland Composition
Collections of glandular tissue within an organ that produce and release non-hormonal substances into ducts
Negative Feedback
Allow brain and body to have control over the secretion rates of hormones
Pineal Gland
Hormones
Attached to roof of 3rd Ventricle in Center of brain
Hormone-MELATONIN
-helps set body’s biological clock, sleeping patterns
Pituitary Gland
Hormones
Attached inferiority to hypothalamus, encased in dura mater, anterior and posterior portion
ANTERIOR Hormone-TSH(Thyroid stimulating hormone), GH(growth hormone), ACTH(Adrenocorticotropic hormone)
POSTERIOR Hormone- ADH(Antidiuretic hormone)
Hyperpituitarism Dieases & Causes
Causes over production of hormones
Gigantism-overproduction before fusion of growth plates
Acromegaly- overproduction after fusion of growth plates
-Tumor, pituitary ischemia
Hypopituitarism Dieases & Causes
Dwarfism-shortness of limbs
Achondroplasia
Parathyroid
Posterior surface of thyroid
Hormone- PTH(parathyroid hormone) which increases blood calcium levels by stimulating osteoclasts to breakdown bony matrix
Thyroid Gland
Anterior side of neck, inferior to trachea
Hormone-TH(thyroid hormone), Calcitonin
TH production & release is controlled through negative feedback. TH speeds up metabolism.
Calcitonin decreases blood calcium levels
Hyperthyroidism
Graves Dieases is the most common cause. Body produces a fake TSH with stimulates production of TH. Exophthalmos(big eyes)
Hypothyroidism
Lack of TH.
Goiter- big budge on neck
Myxedema- puffy face
Cretinism-not enough TH when you are a baby, shorter, flat nose, thick skull. Can be treated before 3 months old.
Adrenal Glands
On top of kidneys. All hormones help cope with stress.
Cushing’s Disease/Syndrome
High levels of cortisol in blood stream.
Pancreatic Islets
Clusters of 2 types hormone producing cells that work against each other to maintain blood sugar levels.
Alpha cells-glucagon
Beta cells-Insulin
Glucagon
Stimulates liver to release glucose into the blood to raise sugar levels
Insulin
Decreases blood sugar levels
Diabetes Mellitus
Type 1 & 2
Juvenile Diabetes- genetic defect in insulin production
Insulin resistant diabetes. Need to exercise and watch diet
Artery chain
Arteries-arteriolar-capillary beds-venules-veins
Function of Lymphatic System
Collects extra “stuff” that is stuck between the tissues
Blood composition
55% plasma
45% formed elements (RBC’s,WBC’s,Platelets)
Lymph nodes help….
Prevent the spread of infection
Line of Defence
- Maintaining intact skin&mucous membranes
- Inflammation(non-specific), prevents spread and any further damage SWELLING HEAT PAIN REDNESS
- Specific Immunity-slower but lasts longer
Super Bugs
MRSA-Methicillin resistant staphylococcus aureus
VRE-Vancomycin resistant enterococcus
C-Difficile
White Blood Cell types
Lymphocytes & Monocytes
T-lymphocytes go to thymus gland
B-Lymphocytes of to blood stream
NK-killer cells