A type of hormone that acts on neighboring cells without entering the bloodstream. 1. Local hormone 2. Paracrine 3. Autocrine 4. Circulating hormone E. Both 1 and 2
Water-soluble hormones bind to membrane receptors, which activate intracellular signaling pathways that lead to changes in the cell's metabolic activity. Describe the role of the hypothalamus in the regulation of hormone release from the pituitary gland. Model Short Answer: The hypothalamus is the integrating center for much sensory input.
A.Thyroid hormone decreases muscle mass. B.Calcitonin is the primary regulator of Ca2+ needed for contraction. C.Epinephrine helps increase blood flow to exercising muscle. D.Erythropoietin blocks formation of erythrocytes.
C.Only water-soluble hormones use second messengers. D.Only water-soluble hormones require a receptor. E.Lipid-soluble hormones are not found in the bloodstream. C. Only water-soluble hormones use second messengers.
Chpt 18QuestionAnswerWhich hormone does the posterior pituitary produce?Oxytocin and Antidiruetic hormoneThe amount of ADH that is secreted varies with?Blood osmotic pressureWhich hormone opposes the action of parathyroid hormone?CalcitoninParathyroid hormone is the major regulator of which ions in the blood?Calcium78 more rows
Synergistic effect of hormone can be explained as when two or more hormones combine to produce effects greater than the sum of their individual effects.
Complementary Hormone Action. Sometimes two hormones with opposite effects act to regulate part of the body's internal environment. Such a complementary system regulates the level of calcium ions in the bloodstream.
The three most common types of interaction are as follows:The permissive effect, in which the presence of one hormone enables another hormone to act. ... The synergistic effect, in which two hormones with similar effects produce an amplified response. ... The antagonistic effect, in which two hormones have opposing effects.
Examples of Antagonistic HormonesParathyroid hormone (PTH) and Calcitonin. Calcitonin and PTH are referred to as antagonistic hormones, as their actions are diametrically opposite. ... Glucagon and Insulin. Insulin and glucagon are antagonistic hormones.
Synergism comes from the Greek word "synergos" meaning working together. It refers to the interaction between two or more "things" when the combined effect is greater than if you added the "things" on their own (a type of "when is one plus one is greater than two" effect).
A gland that makes substances such as sweat, tears, saliva, milk, and digestive juices, and releases them through a duct or opening to a body surface. Examples of exocrine glands include sweat glands, lacrimal glands, salivary glands, mammary glands, and digestive glands in the stomach, pancreas, and intestines.
Endocrine reflexes are pathways of the endocrine system where hormones regulate body functions to maintain homeostasis, or a balance in the body. Simple endocrine reflexes involve only one hormone.
A humoral stimulus refers to the control of hormone release in response to changes in extracellular fluids such as blood or the ion concentration in the blood. For example, a rise in blood glucose levels triggers the pancreatic release of insulin.
The three most common types of interaction are as follows: The permissive effect, in which the presence of one hormone enables another hormone to act. For example, thyroid hormones have complex permissive relationships with certain reproductive hormones.
A local hormone produced at one site but active at a different site in the body.
Hormones cause cellular changes by binding to receptors on target cells. The number of receptors on a target cell can increase or decrease in response to hormone activity. Hormones can affect cells directly through intracellular hormone receptors or indirectly through plasma membrane hormone receptors.
Model Short Answer: Upon reaching their target cells, lipid-soluble hormones diffuse across the phospholipid bilayer of the target cell membrane and bind to receptors in the cytosol or nucleus.
Insulin should be administered because symptoms are indicative of diabetic shock. Johnny, a 5-year-old boy, has been growing by leaps and bounds; his height is 100% above normal for his age. He has been complaining of headaches and vision problems. A CT scan reveals a large pituitary tumor.