1|Page
PNM300 TEST 3 EXAM PART 2 VERIFIED
QUESTIONS & 100% ACCURATE ANSWERS |
COMPLETELY UPDATED 2025–2026 EDITION A+
PERFORMANCE GUARANTEED
Thyroid secretes which hormones? - ANSWER: Triiodothyronine (T3)
Thyroxine (T4)
Calcitonin
effects metabolic rate, as well as lipid & carbohydrate metabolism - ANSWER: T4
effects growth/development + metabolism + heat regulation - ANSWER: T3
stimulates osteoBLAST; inhibits osteoCLAST activity - ANSWER: Calcitonin
Hypothyroidism symptoms?
**SLOW - ANSWER: slowed metabolism: DECREASED
-HR, RR, BP
- Cold intolerance
- weight gain
- constipation
abnormality in the thyroid gland = unable to release hormone
,2|Page
primary/secondary/tertiary?
**hint: most common - ANSWER: primary
dysfunctional pituitary = doesn't secrete TSH (needed for T3 + T4)
primary/secondary/tertiary? - ANSWER: Secondary
Hypothalamus doesn't secrete TRH (stimulates release of TSH) - ANSWER:
Tertiary
hyposecretion of thyroid hormone (T4) during YOUTH leads to this condition
--> dysfunctional sexual, physical and mental growth - ANSWER: Cretinism
hyposecretion of thyroid hormone as an adult leads to this condition
--> decreased metabolic rate loss of mental, physical stamina, weight gain, loss of
hair, firm edema, yellow dullness of skin
(An EXTREME complication of hypothyroidism!) - ANSWER: Myxedema
enlargement of the thyroid gland --> overstimulation by elevated levels of TSH -
ANSWER: Goiter
Why is levothyroxine the preferred thyroid replacement drug? - ANSWER: -
100% chemically pure T4
, 3|Page
- standardized hormonal content
- predictable effect
- long half-life
Which lab tests does the nurse need to know that are used to monitor thyroid
hormone replacement therapy? (SATA)
a. Serum TSH
b. Blood urea nitrogen (BUN)
c. Complete blood count (CBCs)
d. Free thyroid hormone levels
e. Serum iodine levels - ANSWER: A, D.
- serum TSH
- free thyroid hormone levels
levothyroxine route? - ANSWER: PO
levothyroxine onset? - ANSWER: 3-5 days
levothyroxine peak - ANSWER: 2-4 hrs
levothyroxine duration of action? - ANSWER: 1-3 weeks; half life= 6-7 days
PNM300 TEST 3 EXAM PART 2 VERIFIED
QUESTIONS & 100% ACCURATE ANSWERS |
COMPLETELY UPDATED 2025–2026 EDITION A+
PERFORMANCE GUARANTEED
Thyroid secretes which hormones? - ANSWER: Triiodothyronine (T3)
Thyroxine (T4)
Calcitonin
effects metabolic rate, as well as lipid & carbohydrate metabolism - ANSWER: T4
effects growth/development + metabolism + heat regulation - ANSWER: T3
stimulates osteoBLAST; inhibits osteoCLAST activity - ANSWER: Calcitonin
Hypothyroidism symptoms?
**SLOW - ANSWER: slowed metabolism: DECREASED
-HR, RR, BP
- Cold intolerance
- weight gain
- constipation
abnormality in the thyroid gland = unable to release hormone
,2|Page
primary/secondary/tertiary?
**hint: most common - ANSWER: primary
dysfunctional pituitary = doesn't secrete TSH (needed for T3 + T4)
primary/secondary/tertiary? - ANSWER: Secondary
Hypothalamus doesn't secrete TRH (stimulates release of TSH) - ANSWER:
Tertiary
hyposecretion of thyroid hormone (T4) during YOUTH leads to this condition
--> dysfunctional sexual, physical and mental growth - ANSWER: Cretinism
hyposecretion of thyroid hormone as an adult leads to this condition
--> decreased metabolic rate loss of mental, physical stamina, weight gain, loss of
hair, firm edema, yellow dullness of skin
(An EXTREME complication of hypothyroidism!) - ANSWER: Myxedema
enlargement of the thyroid gland --> overstimulation by elevated levels of TSH -
ANSWER: Goiter
Why is levothyroxine the preferred thyroid replacement drug? - ANSWER: -
100% chemically pure T4
, 3|Page
- standardized hormonal content
- predictable effect
- long half-life
Which lab tests does the nurse need to know that are used to monitor thyroid
hormone replacement therapy? (SATA)
a. Serum TSH
b. Blood urea nitrogen (BUN)
c. Complete blood count (CBCs)
d. Free thyroid hormone levels
e. Serum iodine levels - ANSWER: A, D.
- serum TSH
- free thyroid hormone levels
levothyroxine route? - ANSWER: PO
levothyroxine onset? - ANSWER: 3-5 days
levothyroxine peak - ANSWER: 2-4 hrs
levothyroxine duration of action? - ANSWER: 1-3 weeks; half life= 6-7 days
