AP BIOLOGY

Detailed explanation-1: -Shivering is an involuntary somatic motor response that occurs in skeletal muscles to produce heat during exposure to cold environments or during the development of fever.

Detailed explanation-2: -When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis. Skeletal muscles begin to shake in small movements, creating warmth by expending energy. Shivering can also be a response to fever, as a person may feel cold.

Detailed explanation-3: -Estrogens generally promote vasodilation, heat dissipation, and lower body temperature and progesterone or progestins generally have the opposite effect.

Detailed explanation-4: -Homeostasis is the ability of the body to maintain a stable internal environment despite a changing environment. Negative feedback is a response to a stimulus that keeps a variable close to a set value. Positive feedback is a response to a stimulus that increases the likelihood of normal production.