The advantage of portal circulation is that_____. it can deliver all of the hormone molecules made one gland to a second gland it ensures that endocrine hormones will be transported to all cells throughout the body it allows cells to make more of a hormone so they are more effective in stimulating target cells it prevents target cells from being desensitized by constant high levels of the hormone

The advantage of portal circulation is that_____. it can deliver all of the hormone molecules made one gland to a second gland it ensures that endocrine hormones will be transported to all cells throughout the body it allows cells to make more of a hormone so they are more effective in stimulating target cells it prevents target cells from being desensitized by constant high levels of the hormone

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter15: The Endocrine System

Section: Chapter Questions

Problem 5SQ: Which of the following stimulate the secretion of hormones? a. neural signals b. local chemical...

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Hormones Affect only other hormone producing organs Remain at a constant concentration in the blood Are produced by exocrine glands Are carries in the blood to all parts of the body All of the above
The primary reason for downregulation/desentization of hormone receptors is: O metabolic clearance prolonged exposure abnormally high hormone levels normal physiological levels
Correctly order (from first to last) the steps involved in the Steroid mechanism of hormone action the harmone receptor complex is formed the steroid homorne diffuses into a cell's cytoplasm the hormone-receptor complex transloacates into the cell's nucleus transcription occurs followed by translation a newly formed protein initiates a cellular response the steroid harmone detaches from its protein carrier
Which of the following best explains how hormone antagonists work? Multiple Choice By flooding the cancerous cells with hormones By blocking actions of hormones that the cancer cells need to function By competing with uracil or cytarabine and metabolizing the nutrients required for hormone production By inhibiting folic acid, which is essential for blood cell and hormone production
Which of the following statements about hormones is correct? O steroid hormones are water soluble O epinephrine, norepinephrine, and dopamine are all catecholamines O receptor molecules of water soluble hormones are usually cell membrane proteins O water soluble hormones act on target cells by altering gene expression O Amine hormones are all lipid soluble O receptor molecules of lipid soluble hormones are usually in the cytoplasm or nucleus, but can also be in the cell membrane O insulin, growth hormone, and ecdysone are all examples of peptide hormones
Generally, a cell that is affected by a particular steroid hormone would be expected to have ________. enzymes that are activated or inactivated by the hormone's second messenger a receptor inside the cell that binds the hormone a cell-surface receptor that binds the hormone DNA sites that interact with the hormone
Vhich of the following best describes the mechanism of action of lipid-soluble hormones? Multiple Choice Activating second messengers Binding to receptors in the nucleus of the target cell Binding to receptors on the plasma membrane All of these
Which of the following statements regarding Antidiuretic Hormone signaling is false? - it involves the posterior pituitary - involves a first order feedback loop - it is initiated by barorecptors in the heart signaling to the hypothalamus - ADH will act in the kidneys to increase water retention, in part by changing aquaporin abundance
Describe to me why certain hormones (lipids-based hormones) can move directly through the cell membrane in comparison to hormones (protein-based hormones) have to bind to the outside of the cell and then send secondary messengering inside in order to work? Which hormones are in each of the 2 categories? How does this affect the way we deliver/treat hormone conditions?
Steroid hormones find their receptors inside of cells. True or Flase? This is true. Explain why this is not false
Why can a single endocrine hormone produce a wider spread of responses in more of the body than a single nerve cell? Group of answer choices Blood can carry all the same hormones throughout the body simultaneously, producing responses all over the body; nerve cells can only target a small number of cells. Nerve cells and blood work together. The endocrine has nothing to do with the nervous system. Endocrine hormones only target a very small number of precise responses. A single hormone can target many different responses, whereas a nerve only targets a single response.
One of the main endocrine glands in the human body is the pituitary gland. This gland produces a variety of hormones with different effects. Among these are a heterogeneous group of hormones called tropic hormones, which directly stimulate the secretion of other hormones from downstream endocrine glands. Which of the following are tropic hormones? Select all that apply. LH Prolactin Oxytocin ACTH TSH testosterone

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		it can deliver all of the hormone molecules made one gland to a second gland
		it ensures that endocrine hormones will be transported to all cells throughout the body
		it allows cells to make more of a hormone so they are more effective in stimulating target cells
		it prevents target cells from being desensitized by constant high levels of the hormone