Adrenaline and thyroxine

What is adrenaline?

A hormone produced by the adrenal glands that prepares the body for fight-or-flight responses.

How does adrenaline affect the body?

It increases heart rate, dilates airways, raises blood sugar levels, and redirects blood to muscles.

What triggers the release of adrenaline?

The body’s response to stress or danger, such as during physical activity or emotional stress.

What is the role of adrenaline in the fight-or-flight response?

It helps the body respond to stress by preparing for physical exertion.

What is thyroxine?

A hormone produced by the thyroid gland that regulates metabolism and growth.

How does thyroxine affect the body?

It increases metabolic rate, influencing growth, body temperature, and energy production.

What triggers the release of thyroxine?

Thyroxine release is stimulated by thyroid-stimulating hormone (TSH) from the pituitary gland.

What is hyperthyroidism?

A condition where the thyroid gland produces too much thyroxine, leading to increased metabolism.

What is hypothyroidism?

A condition where the thyroid gland produces too little thyroxine, leading to slowed metabolism.

How does adrenaline affect the cardiovascular system?

It increases heart rate and cardiac output to deliver more oxygen and nutrients to muscles.

How does thyroxine regulate growth?

By stimulating protein synthesis and the growth of tissues and bones.

How do adrenaline and thyroxine interact?

Both hormones help regulate the body's response to stress, but thyroxine also affects long-term metabolic functions.

How can an imbalance in adrenaline affect health?

Too much adrenaline can cause high blood pressure and anxiety, while too little can lead to fatigue and low stress tolerance.

How can an imbalance in thyroxine affect health?

Hyperthyroidism can cause weight loss, increased heart rate, and nervousness, while hypothyroidism can cause weight gain, fatigue, and depression.

What is the relationship between the hypothalamus, pituitary gland, and thyroid in regulating thyroxine?

The hypothalamus releases TRH, stimulating the pituitary to release TSH, which in turn stimulates the thyroid to produce thyroxine.