Ch 14 - Hormones/diabetes Flashcards
2 major thyroid hormones
T3 (triiodothyronine) and T4 (thyroxine)
Cellular consequence of thyroid hormones
Mitochondria get bigger and increase in number
2 types of disease with thyroid gland
Hyperthyroidism or hypothyroidism
S/S of hyperthyroidism
High state of excitability
Intolerance to heat
Increased sweating
Mild to extreme weight loss
Muscle weakness
Nervousness
Extreme fatigue
Inability to sleep
Tremor of hands
S/S Hypothyroidism
Fatigue
Extreme somnolence
Extreme muscular sluggishness
Slow heart rate
Decreased blood volume and cardiac output
Increased weight
Mental sluggishness
Depressed growth of hair
Causes of hyper or hypothryroidism (4)
Autoimmunity
Cancer (tumor)
Diet (lack of iodine)
Genetics (lacking enzymes)
What is a goiter
Large protrusions on the neck due to enlarged thyroid gland
Are goiters for hypo or hyper
BOTH, but seen more often in hypothyroidism
What happens when hypo causes a goiter?
Hypo patients have low thyroid hormones so the body over-produces thyroid stimulating so it tells the thyroid gland to grow bigger and bigger
Treatment for hypothyroidism
T3 and T4 drugs exist
Adverse effects of T3 and T4 drugs
Similar to hyperthyroidism
Nervoussness
Heart palpitations
Tachycardia
Intolerance to heat
Unexpected weight loss
Treatments for hyperthyroidism
Thyroidectomy
Radioactive iodine
Inhibit thyroid hormone synthesis
Goal of birth control hormonal contraceptives
Inhibit ovulation and fertilization
2 types of oral birth control
Combined oral contraceptive pill
Regular preventative measure
Major side effects of estrogen and progestogen
breast fullness
depression
fluid retention
headache
nausea
vomiting
What are SERMs?
Selective estrogen-receptor modulators and they can be agonist or antagonist