Definition: Negative feedback is a process where the body responds to changes by returning conditions to normal levels.

Highlight: Insulin and glucagon work as opposing hormones to maintain blood glucose homeostasis.

Example: When blood glucose rises, insulin converts it to glycogen for storage in muscles.

Vocabulary: Type 1 diabetes occurs when the body doesn't produce enough insulin, while Type 2 diabetes involves insulin resistance.

Definition: Ovulation is the release of a mature egg from the ovary, controlled by hormones FSH and LH.

Highlight: Thyroxine from the thyroid gland regulates metabolism and protein synthesis.

Example: Adrenaline increases heart rate during stress responses without involving negative feedback.

Vocabulary: Estrogen and progesterone are female sex hormones that control reproductive cycles and secondary sexual characteristics.

Definition: Hormones are chemical messengers that regulate various bodily functions.

Highlight: The pituitary gland acts as the master gland, controlling multiple other endocrine glands.

Example: The pituitary gland stimulates the thyroid gland to produce thyroxine, which controls metabolism.

Vocabulary: FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone) are key reproductive hormones produced by the pituitary gland.