Question

question 29
1 pts
which of the following endocrine glands develops primarily from the endoderm of the pharynx?
pineal
anterior and posterior lobes of the pituitary
adrenal medulla
thyroid and parathyroids

question 30
1 pts
fluid filling the posterior segment of the eye.
serous fluid
endolymph
synovial fluid
aqueous humor
vitreous humor

Explanation:

Question 29

• The pineal gland develops from the diencephalon (neuroectoderm).
• The anterior lobe of the pituitary (adenohypophysis) develops from the ectoderm of Rathke's pouch (oral ectoderm), and the posterior lobe (neurohypophysis) develops from the neuroectoderm of the diencephalon.
• The adrenal medulla develops from the neural crest (ectoderm).
• The thyroid gland develops from the endoderm of the floor of the pharynx (thyroid diverticulum), and the parathyroid glands (superior and inferior) develop from the endoderm of the fourth and third pharyngeal pouches respectively.

• Serous fluid is a general term for fluids like that in body cavities (e.g., pleural, peritoneal).
• Endolymph is in the membranous labyrinth of the inner ear.
• Synovial fluid is in synovial joints.
• Aqueous humor is in the anterior and posterior chambers (anterior segment) of the eye.
• Vitreous humor is a gel - like fluid that fills the posterior segment (between the lens and the retina) of the eye.

Answer:

thyroid and parathyroids

Question 30