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Which of the following is the messenger for the Endocrine System?

A.

Neurons

B.

Neuroglia

C.

Hormones

D.

Neurotransmitter

Answer and Explanation

The Correct Answer is C

A. Neurons: Neurons transmit signals in the nervous system, not the endocrine system.
B. Neuroglia: Neuroglia support neurons but do not transmit hormonal signals.
C. Hormones: Hormones are the chemical messengers of the endocrine system, traveling via the bloodstream to target organs.
D. Neurotransmitter: Neurotransmitters are messengers of the nervous system.


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Related Questions

Correct Answer is D

Explanation

A. Early onset of menstrual cycle:
While it may affect long-term reproductive health, it does not cause sterility.

B. Torn hymen:
A torn hymen does not affect fertility.

C. UTI (urinary tract infection):
While painful, a UTI does not cause infertility.

D. Repeated episodes of untreated sexually transmitted infections:
Untreated STIs can lead to pelvic inflammatory disease (PID), scarring, and infertility.

Correct Answer is A

Explanation

A. Fasting blood glucose 155 mg/dL: A fasting glucose level ≥126 mg/dL indicates diabetes. This value is above that threshold.

B. 2-hr blood glucose 132 mg/dL: This is below the diabetic threshold (≥200 mg/dL at 2 hrs) but may indicate impaired glucose tolerance.

C. Casual blood glucose 178 mg/dL: For a random (casual) glucose test, ≥200 mg/dL is diagnostic for diabetes.

D. HbA1c 5.2%: This is within the normal range (below 5.7%).


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