1) At the end of pregnancy, the smooth muscle contractions indicating the onset of labour are triggered as a result of
a. increasing levels of FSH and LH
b. decreasing levels of estrogen
c. increasing levels of progesterone and estrogen
d. decreasing levels of progesterone
2) Labour is controlled by the nervous and endocrine systems through a positive feedback system.
In which example have we encountered another positive feedback system in Biology 30?
a. Prolactin during lactation
b. FSH levels during sperm production
c. Progesterone during menstruation
d. Reflex loop in the PNS
3) There are two hormones involved in lactation. The hormone involved in the production of the milk and the hormone involved in releasing milk, respectively, are
a. colostrum and oxytocin
b. oxytocin and prolactin
c. prolactin and progesterone
d. prolactin and oxytocin
4) SEE first PHOTO ATTACHED TO ANSWER
5) Use the following information to answer the next two questions.
Oxytocin is a reproductive hormone associated with parturition and lactation. A research study examined the blood serum levels of oxytocin in patients who have Type 2 diabetes and those with normal blood glucose levels. Each group was then subdivided into normal weight patients and obese patients. The levels of oxytocin were found to be lower in the obese patients with Type 2 diabetes than in the normal weight patients with normal blood glucose levels.
Select the possible side effects that a lower level of oxytocin may have on a patient.
Naturally occurring labour
Induced labour
Weaker uterine contractions during labour
Stronger uterine contractions during labour
Increased levels of prostaglandins
Decreased levels of prostaglandins
Increased movement of milk into the breast
Decrease movement of milk into the breast
Record your answers in ascending (lowest to highest) order.
Answer
Answer
Answer
6) See second photo attached
Quick Reply
