Testosterone is the hormone responsible for the development of secondary sexual characteristics in males, such as increased muscle mass and body hair.

Thyroxine (T4) is a hormone produced by the thyroid gland that plays a crucial role in regulating metabolism and energy levels.

Epinephrine, also known as adrenaline, is secreted by the adrenal medulla and is involved in the body's fight-or-flight response.

Insulin is secreted by the pancreas and is responsible for lowering blood glucose levels by facilitating glucose uptake by cells.

Glucagon is secreted by the pancreas and raises blood sugar levels by promoting the conversion of glycogen to glucose in the liver.

Insulin is secreted by the pancreas and plays a crucial role in lowering blood sugar levels by facilitating glucose uptake by cells.

The pancreas secretes insulin, glucagon, and somatostatin, all of which play roles in regulating metabolism.

Insulin is the hormone secreted by the pancreas that helps regulate blood glucose levels.

Angiotensin II is a potent vasoconstrictor that plays a key role in regulating blood pressure.

Erythropoietin is a hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow.

Antidiuretic hormone (ADH) regulates the reabsorption of water in the kidneys, reducing urine output.

Melatonin is a hormone produced by the pineal gland that regulates the sleep-wake cycle, promoting sleep.

Luteinizing hormone (LH) triggers ovulation, leading to the release of a mature egg from the ovary.

Oxytocin is the hormone that triggers the onset of labor by stimulating uterine contractions.

A barometer is used to measure atmospheric pressure.

Sodium ions (Na+) rush into the neuron during depolarization, causing the membrane potential to become more positive.

Sodium ions (Na+) rush into the neuron during depolarization, causing the membrane potential to become more positive.

Deuterium is the isotope of hydrogen with one neutron, also referred to as Hydrogen-2.

The kingdom Monera includes unicellular and prokaryotic organisms.

The kingdom Plantae is characterized by multicellular and autotrophic organisms.

The kingdom Plantae is characterized by autotrophic organisms that perform photosynthesis.

Newton's Third Law states that for every action, there is an equal and opposite reaction.

Ohm's Law states that the current (I) through a conductor is directly proportional to the voltage (V) across it, given by the formula V = IR.

The second law of thermodynamics states that the entropy of an isolated system will always increase over time.

The second law of thermodynamics states that the entropy of an isolated system never decreases over time.

Calorimetry states that the heat absorbed or released by a substance is proportional to the change in temperature.

Faraday's Law states that the induced emf in a closed loop is equal to the negative rate of change of magnetic flux through the loop.

Faraday's Law of electromagnetic induction states that the induced electromotive force in any closed circuit is equal to the rate of change of magnetic flux through the circuit.

Faraday's Law states that the induced EMF in a closed loop is equal to the negative rate of change of magnetic flux through the loop.

Gay-Lussac's Law states that the pressure of a gas is directly proportional to its temperature at constant volume.