There Are Usually ________ Parathyroid Glands Embedded in the ________

question 88

Multiple Choice

There are usually ________ parathyroid glands embedded in the ________.

• A)2; thymus
• B)4; thyroid gland
• C)4; adrenal glands
• D)6; pancreas
• E)6; thyroid gland

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Definitions:

Progesterone

Steroid hormone secreted by the corpus luteum and one of the hormones secreted by the placenta.

Ductus Arteriosus

A fetal blood vessel that allows blood to bypass the lungs, which closes soon after birth to establish the regular circulatory path.

Ductus Venosus

A fetal blood vessel that connects the umbilical vein to the inferior vena cava, allowing oxygenated blood from the placenta to bypass the liver and enter the systemic circulation.

Fetal Lungs

The lungs of a fetus, which are not used for breathing air but are critical for the development of the respiratory system.