91.
What is the primary function of the gastrointestinal system?
A
B
C
D
Explanation:
The gastrointestinal system is responsible for the digestion and absorption of nutrients from food, as well as the elimination of waste products, but it is not directly involved in regulating body temperature or blood pressure.
92.
Which hormone is responsible for stimulating the contraction of the uterus during childbirth?
A
B
C
D
Explanation:
Oxytocin, released by the posterior pituitary gland, stimulates uterine contractions during childbirth and milk ejection during breastfeeding, but it is not involved in the regulation of estrogen, progesterone, or prolactin.