Identify the location of secretion and the primary function for the following hormones:
$(1)$ Relaxin
$(2)$ Thyrocalcitonin
$(1)$ Relaxin
$(2)$ Thyrocalcitonin
(N/A) $(1)$ Relaxin:
- Location: It is secreted by the corpus luteum (in the ovary) and the placenta during pregnancy.
- Function: It facilitates parturition by relaxing the pelvic ligaments and softening the cervix.
$(2)$ Thyrocalcitonin $(TCT)$:
- Location: It is secreted by the parafollicular cells ($C$-cells) of the thyroid gland.
- Function: It regulates blood calcium levels by lowering them,acting as an antagonist to the Parathyroid Hormone $(PTH)$.
- Location: It is secreted by the corpus luteum (in the ovary) and the placenta during pregnancy.
- Function: It facilitates parturition by relaxing the pelvic ligaments and softening the cervix.
$(2)$ Thyrocalcitonin $(TCT)$:
- Location: It is secreted by the parafollicular cells ($C$-cells) of the thyroid gland.
- Function: It regulates blood calcium levels by lowering them,acting as an antagonist to the Parathyroid Hormone $(PTH)$.
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