Hormones like oxytocin may need to be injected to achieve a more direct and rapid effect compared to oral or topical administration. This is especially important in situations where quick action is required, such as during childbirth to stimulate uterine contractions. Intravenous or intramuscular injection ensures that the hormone is delivered efficiently and effectively to produce the desired physiological response.
Some hormones are not well absorbed when taken orally and may be broken down by enzymes in the digestive system before they can reach the bloodstream. Injecting hormones allows for direct delivery into the bloodstream, providing a more reliable and consistent dosage. Additionally, some hormones are destroyed or metabolized by the liver if taken orally, reducing their effectiveness.
Yes when they are from distant glands, for example when ADH (synthsised in the posterior pituitary gland) must travel to the kidney. However, some hormones are made on-site, so do not use the bloodstream to travel to their target organ(s)/cell(s).
Usually food or ingested medication. However, vitamin-D can be made in the body under the influence of sunlight on the skin, and some vitamins can be injected.
The female reproductive system is important for producing eggs, releasing hormones like estrogen and progesterone, facilitating fertilization and pregnancy, and supporting the development and birth of offspring. It plays a crucial role in human reproduction and the continuation of the species.
Many proteins must be chemically folded into an active tertiary structure. The protein must be transported to where it will function. Sometimes the protein must move out of the cell, as in the case of hormones such as insulin. In such case, a small membrane vesicle contains the protein fuses with the cell membrane. The protein is than released outside and the proteins that are destined to become a part of membrane are made on ribosomes that are bound to the endoplasmic reticulum.
You can't take insulin by mouth because the acids in your stomach would destroy it. http://www.healthline.com/sw/khs-using-injected-insulin
Insulin is protein soluble and would be unable to cross the wall of the gastrointestinal tract without being broken down and the hormones in birth control pills are lipid soluble are correct.
Some hormones are not well absorbed when taken orally and may be broken down by enzymes in the digestive system before they can reach the bloodstream. Injecting hormones allows for direct delivery into the bloodstream, providing a more reliable and consistent dosage. Additionally, some hormones are destroyed or metabolized by the liver if taken orally, reducing their effectiveness.
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Thyroid
No and they are not used in most countries. Growth hormones are banned in all of North America and most of Europe. It is just not feasible to inject a drug into a chicken. Growth hormone injections are worth more than the chicken. Hormones cannot be fed to the birds, it does not work, they have to be individually injected and a current cost of about 3.00 US. A chicken, dressed out and sold to a vendor for resale nets a producer about 4.50 US.
Yes! Cows or heifers must be impregnated in order to continue lactation. The reason that any mammal produces milk is to nourish their offspring. There are hormones that can be injected to lengthen the lactation cycle, but the cow will eventually stop producing milk if she is not impregnated.
The thyroid.
Yes but many other conversions must take place
By oil injected I assume you mean it is a 2 cycle engine. If so you must us 2 cycle oil. I recommend a synthetic oil.
Legal Human Growth Hormones cannot be bought online or in store through a retailer. One must schedule an appointment with their physician and obtain a prescription.
Their target cells must formulate new proteins before an effect can take place.