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level: Vitamin D

Questions and Answers List

level questions: Vitamin D

QuestionAnswer
When measuring vitamin D status , measure using ________ no trioldiol
Can you get a vitamin toxicity from too much sunlight exposure?false
which months does your body not synthesize vitamin D?Nov-Feb
Ergocalciferol AKA vit. D____ is synthesized in _______2 plants
Cholocalciferol AKA vit D _______ is synthesized in _________3 vertebrates
Vitamin D ____ is the most beneficial in supplementsD3
what is 7-dehydrocholesterol?A vitamin D precursor in the skin
What are lumisterol + Tachysterol?A byproduct in the skin from the synthesis of vitamin D
what is 25 hydroxyl Vitamin D?First step to activation
25 OH cholecalciferol is also known as _______ (2)25 Hydroxyl Vit D and Calcidiol
what is 1,25 Dihydroxy vit D?hormon active form
!,25 dihydroxy vit D is also known as _________Calcitreol
Vitamin D synthesis in the skin: Cholesterol - - -> _________ by the sebaceous glands and the enzyme ___________7' dehydrocholesterol cholocalciferol
Vitamin D is synthesized between ____ and _____ in the summers9am-4pm
What factors can effect vit D synthesis? (5)Anything covering the sunshine (pollution/cloud cover/clothes/sunblock/time of year/day) Age Weight Skin color UVA/UVB ratio
What is the Minimal Erythmal Dose (MED)?The amount of time it takes for skin to turn pink
What number of MED is the best way to get enough vitamin D?one
What is the RDA of vitamin D?600 IU
How many mcg are in an IU of vitamin D?1 mcg = 40 IU
Infants being breastfed should supplement with ________IU of Vitamin D400
Which foods are often fortified with vitamin D?Milk yogurt orange juice
T/F Vit D2 and D3 requires no digestion?True
Vitamin D circulates through the blood bound to _______ and _________ Which one is most common?VDBP (Most this way) Albumin
What is the role of the liver in Vitamin D activation?D2/3 - - > DIol
Kidney activates Vitamin D by converting calcidiol to ______Calcitriol
What hormones regulate Vitamin D? (2)PTH FGF23
Besides the kidney, Caldiol can be converted to calcitriol by... (7)Skin Monocytes/macrophages Adipose Tissue Skeletal Muscle Heart Brain Pancreas SMASH BP
Vitamin D functions (4)Immune System Ca + P regulation Protect beta calles (insulin reg.) Anti-inflammatory
How does vitamin D interact with calcium? (2)Calcium absorption/reabsorption Mobilize Ca from bone
low serum calcium signals the _______ to tell the bone to release calcium and _________. This increases calcium in the bloodPTH (parathyroid hormone) Phosphorous
When Calcium is low in the blood, vitamin D signals the ________ which releases ________. This is then sent to the kidney where it is converted into ____________. This substance increases Calcium absorption and helps increase serum calcium.liver calcidiol calcitriol
Calcitriol binds with _____ in the nucleus to make Calbindin MRNA which is converted to calbindin at the _________. Calbindin then goes through the calcium channel and into the _________ to promote calcium absorptionRXR Endoplasmic Reticulum. Small Intestine
Diseases related to vitamin D (9)Muscle weakness Covid 19 Cancer Rickets Depression Hypertension Heart Disease Osteomalacia Osteoporosis Thyroid Conditions MC2 RD HHOOT
in order to be considered a prebiotic, it must not only increase the bacterias health but also.....increase the hosts health
What can cause Vitamin D deficiency (6)decrease skin synthesis (age) high sequestriation (BMI >30) Decreased fat absorption increased catabolism (steroid) Breast Feeding Hepatic Failure
For initial deficiency treatment, you take _________IU daily, or ________IU weekly. This lasts for ______6000 50000 8 weeks
Once there is a measurment of _______ng/mL than you should take _______IU /d30 1000-2000
Vitamin D toxicity symptoms (7)Confusion Recurrent vomiting Apathy Polyuria Polydipsia Abdominal Pain Dehydration CRAP PAD
Hypercalcemia initial symptoms: (5)kidney stones Itching/nervousness Polydipsia, polyuria, dehydration
Long term hypercalcemia can lead tocalcification of soft tissue