Thyroid, Parathyroid and Thymus Glands Review

Thymosins are paracrine hormones secreted by the ____ gland.

Thymosins:

• regulated the metabolism by affecting the mitochondria

• lower blood calcium

• raise blood calcium

• aid in development of immune cells

• turn off the thyroid gland secretion

The most abundant cell of the thyroid gland is called the:

• parafollicular cell

• follicular cell

• colloid cell

• C cell

Identify the substance at the arrows in the image.

Tags

NGSS.HS-PS1-1

What is the function of the colloid?

• a storage area for iodine

• a storage site for T3 and T4

• a storage site for calcitonin

• a storage site for TSH

What element is necessary for the T3 and T4 to be produced properly?

Which thyroid cells are shown here?

• C cells

• parafollicular cells

• follicular cells

• colloid cells

(Select all that apply.)

Which thyroid cells are shown here at the red circles?

• C cells

• parafollicular cells

• follicular cells

• colloid cells

Which hormone(s) are produced by the cells shown here? (Select all that apply)

• calcitonin

• T3

• T4

• TSH

What hormone(s) are produced by the cells shown here at the red circles?

• calcitonin

• T3

• T4

• TSH

• parathormone

Tags

NGSS.HS-LS1-3