Multiple choice

Which of the following glands secrete products directly into the blood stream?

a. Pituitary gland b. Sebaceous gland c. Thyroid gland d. Sweat gland

  1. Both a and b

  2. Both b and c

  3. Both b and d

  4. Both a and c

  5. Both a and d

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Pituitary and thyroid glands are endocrine glands.