Endocrine Disorders (Hyperthyroidism) Flashcards
Under which condition is Hashimoto’s thyroiditis under
Hyper or hypothyroidism?
Hypothyroidism
Hashimoto’s thyroiditis is not genetic
True or false ?
False it is genetic
T3&4 reduced levels if it in hypothyroidism
Possible cause of a tumor where ? That will cause hashimoto thyroiditis !!!
> Think the endocrine organs <
Pituitary tumour:
This causes The AP to stop releasing TSH
What releases TSH?
Anterior pituitary
the synthesis of the thyroid hormone relies on what component. If there isn’t much of this in someone’s diet it can cause a decrease in t3 &t4 in the blood! ?
Calcium
Iodine
Potassium
Chloride
Iodine
Other than conditions
medications,
conditions effecting the pituitary gland
and what else causes hypothyroidism?
There’s 2 more
Thyroid Surgery
Radioactive iodine treatments
What are some signs and symptoms of hypothyroidism on a cellular level ?
There are 2
> Weight gain - reduced cell metabolism
> Reduced temp - due to reduced cell metabolism there’s less heat as it’s a biprodyct of cellular metabolism
What’s are Signs and symptoms of hypothyroidism in relation to cardiovascular system ?
Tachycardia ?
Bradycardia ?
Arrhythmias ?
Hyper/hypotension ?
Choose 2
Vasomotor tone is maintain by t3+t4 when it’s reduced it tips the balance to vasoconstriction which causes:
Brady
Hypo
MSK issues related to hypothyroidism:
Name a few
In the ans there’s 4
Bones - decreased growth & maturation
Muscle weakness
Hair loss
Brittle and thin nails
Dry & pale skin
Why is there increased parasympathetic activity in hypothyroidism ?
Because there is a decrease in sympathetic nervous system activity !
Reproductive system issues in relation to hypothyroidism causes what ? In men?
In men there are 3 issues that are caused namely them
Reduced sperm production
Decreased sex drive
Erectile dysfunction
Again in relation to the female reproductive system what 2 conditions are caused by hypothyroidism ?
Endometriosis
Oligomenorrhea
Amenorrhea
PCOS
Oligomenorrhea
Amenorrhea
Due to reduced thyroid hormones the feedback loop produces more TSH which in turn creates more prolactin eventually inhibiting the production of testosterone and estrogen
Lecture 🛝
Prolactin’ functions mainly to promote lactation but helps regulate reproduction
What is 1 GI symptoms as a result of hypothyroidism ?
Constipation
As it slows down GI motility & secretions
What disease is a primary cause of Hyperthyroidism ?
Graves’ disease which is the primary cause
It is a Autoimmune disease
What causes oligomenorrhea & ammenorrhea in hypothyroidism?
Hint: thyroid hormones
Due to decrease t3 & t4
Feedback sys ⬆️ TSH = ⬆️ prolactin = which blocks production of estrogen & testosterone
What causes ammenorhea and oligomenorrhea in hyperthyroidism?
⬆️ sex hormone binding globulins
⬇️
Bind to oestrogen & testosterone
⬇️
It ⬇️ oestrogen and testosterone levels
In the blood
What causes in hyperthyroidism fractures ?
Osteoclasts
Osteoblasts
Clasts
What are trophic hormones
Hormones that have a target that isn’t an organ e.g
Hypothalamus releases TRH
⬇️
To the pituitary gland that stimulates
the TSH
⬇️
Which then have a effect on the thyroid gland to produced t3 & 4
Gland to gland to gland whereas effector hormones like the CRH hormone where it stimulates the release of adrenocorticotropic hormone in to the blood
What causes dysfunction and disorder in
There’s 4 answers
Hint: includes hormones & trauma
The Glands (trauma/ tumors/ inflammation
Release or trophies hormones, and effector hormones
Hormone transport: like metabolism demand increase or heat making blood sticky
Target tissue: disruption, like trauma or infection
Where is the thyroid located. Under which cartilage ?
Under the laryngeal cartilage
What’s the job of the thyroid gland
Synthesise and release thyroid hormones
primary effects of the thyroid gland is to … what ?
Hint: protein, fats and carbs - metabolism
Stimulate metabolic rate of target cells by increasing metabolism of protein, fats and carbs
Easier words:
When your tired, your body will detect that n they will send signals to the brain that we need more energy, so the
hypothalamus speaks to pituitary gland (AP) & asks for it to release TSH.
TSH reaches the thyroid gland which has T4 the storage hormone, where TSH interacts with T4 and converts it to t3 which then stimulates the metabolic rate of the cells therefore ⬆️the rate they metabolize proteins, fats and carbs in response to more energy is required !!
Where does sodium potassium pump work? There’s 2 answers
( they are systems in the body ) !!
Stimulates the sodium potassium pump. Its vital for nerve stimulating the, cardiac and urinary functions
Kidneys: ( it helps maintain the sodium levels & K+ balance which effects the fluids maintainence)
Heart contractions: e.g bradycardia, tachycardia
Failure of the sodium and potassium pump can cause the cells to what ?
Swell up therefore can give pts weight gain
