In times of stress, the brain stimulates the adrenal glands to produce hormones including epinephrine and norepinephrine, which aid in dealing with the 'fight or flight' response. The adrenal cortex also manages longer-term stress responses through the production of corticosteroids such as aldosterone in response to ACTH.
During times of stress, the brain activates the sympathetic nervous system and signals the adrenal glands to produce hormones that assist in managing this stress. Among these hormones are epinephrine and norepinephrine (also known as adrenaline and noradrenaline), which are produced by the adrenal medulla. These hormones regulate the acute 'fight or flight' response to stress, with physiological effects such as increased heart rate, blood pressure, and blood glucose levels. Acetylcholine stimulates the release of these hormones in response to neural impulses from the hypothalamus.
Meanwhile, the adrenal cortex is involved in managing long-term stress responses through the production of corticosteroids, stimulated by the hormone adrenocorticotropic hormone (ACTH). ACTH is triggered by Corticotropin-releasing hormone (CRH) from the hypothalamus. These corticosteroids, such as aldosterone, can influence fluid retention and blood volume, thus affecting blood pressure.
Learn more about Stress response hormones here:
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Answer:
The main pigment responsible for the yellow color of urine and the brown color of feces is called urobilin.
Explanation:
Here's how it works:
1. When red blood cells break down in the body, a molecule called bilirubin is produced. Bilirubin is a yellow pigment.
2. Bilirubin is transported to the liver, where it undergoes further processing.
3. In the liver, bilirubin is conjugated with glucuronic acid, forming a water-soluble compound called bilirubin glucuronide.
4. Bilirubin glucuronide is then secreted into the bile, a digestive fluid produced by the liver.
5. The bile flows into the small intestine, where it aids in the digestion and absorption of fats.
6. In the intestine, bilirubin glucuronide is broken down by bacteria into urobilinogen.
7. Some urobilinogen is reabsorbed into the bloodstream and eventually excreted by the kidneys, giving urine its yellow color.
8. The remaining urobilinogen is further processed by bacteria in the colon, resulting in the formation of urobilin. Urobilin gives feces its brown color.
It's important to note that factors such as hydration levels and certain medications can influence the color of urine. In some cases, a darker yellow color may indicate dehydration, while lighter or clear urine may indicate excessive hydration.
Similarly, changes in diet, certain medications, and underlying health conditions can affect the color of feces. If you notice any significant changes in the color of your urine or feces, it's always a good idea to consult a healthcare professional for further evaluation.
Parallel
B. Crisscross
C. Reticulated
When the moon is waning, the visible part of the moon is
A) getting smaller
B) getting larger
C) staying the same
D) always yellow
Which of the following is true of the relationship between the moon and the Earth?
A) The moon rotates around the earth.
B) The moon rotates around the sun.
C) The Earth revolves around the moon.
D) The moon revolves around the Earth.
Which statement is true?
A) The moon rotates and revolves at a slower rate than the Earth.
B) The moon revolves around the earth faster than it rotates.
C) The moon revolves around the earth much slower than it rotates.
D) The moon does not rotate at all.
Answer:
The block o time in the geological time scale are called:
Eon: The biggest ones
Eras: Which are the middle ones
Periods: Which are the smallest ones.
Explanation:
The geological time scale classifies the lapses of time in different gradients. It does it like that to optimize the retrieval of data and locate the objects and phenomenons of study to analyze them and conduct the research in an organized way. Eons are classified in Archean, Proterozoic, and Phanerozoic. Eras are classified in: Early archean, middle archean, late archean, Early proterozoic, Middle proterozoic, late proterozoic, Paleozoic, Mesozoic, Cenozoic. Periods are classified in Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous, Tertiary, Quaternary.