1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nirvana33 [79]
3 years ago
8

Childbirth in mammals is an example of endocrine-controlled negative feedback, because the production of oxytocin during childbi

rth results in additional oxytocin being synthesized by the posterior pituitary gland. A. True B. False
Biology
2 answers:
Rashid [163]3 years ago
5 0

Answer:

B. False

Explanation:

Child-birth in mammals is not an example of endocrine-controlled negative feedback, because the production of oxytocin during childbirth doesn't result in additional oxytocin being synthesized by the posterior pituitary gland.

Oxytocin is the enzyme which is necessary at the time of birth in order to contract the walls of the uterus and expel the baby out of the body. Oxytocin levels rise at the onset of labour,causing regular contractions of womb and abdominal muscles. Oxytocin induced contractions become stronger and more frequent without the influence of progesterone and estrogen, which at high levels prevent labour.

Ganezh [65]3 years ago
3 0

Answer:

False

Explanation:

Negative feedback mechanisms act like a thermostat in the

home. As the temperature rises (deviation from the ideal normal

value), the thermostat detects the change and triggers the air-

conditioning to turn on and cool the house. Once the

temperature reaches its thermostat setting (ideal normal value),

the air conditioning turns off. <_o3a_p>

In negative feedback, the response will reverse or cause the

opposite effect of the original stimulus. Negative feedback can

be explained with the process of insulin production and

release. After a meal the blood sugar level will be elevated due

to the absorption of sugars from the digestive tract. This

triggers the release of insulin from pancreas. Insulin converts

sugar into cells and hence the blood sugar level drops. This

low blood sugar level will result in the cessation of insulin

release. This insulin response is a negative feedback. Most

endocrine glands are under the control of negative feedback

mechanisms <_o3a_p>

Positive feedback mechanisms are rare. It amplifies changes

rather than reversing them. The release of oxytocin from the

posterior pituitary gland during labor is an example of positive

feedback mechanism. Oxytocin stimulates the muscle

contractions that push the baby through the birth canal. The

release of oxytocin result in stronger or augmented contractions

during labor. The contractions intensify and increase until the

baby is outside the birth canal. When the stimulus to the

pressure receptors ends, oxytocin production stops and labor

contractions cease.

Positive feedback mechanisms control self-perpetuating events

that can be out of control and do not require continuous

adjustment. In positive feedback mechanisms, the original

stimulus is promoted rather than negated. Positive feedback

increases the deviation from an ideal normal value.

You might be interested in
What encourages flooding by allowing water to run off into streams?
expeople1 [14]

Deforestation encourages flooding by allowing water to run off into streams

<u>Explanation</u>:

Deforestation plays vital roles in the flooding. The roots of the Trees prevent sediment runoffs and forests hold more water than farms or grasslands.Firstly the leaves in the trees will capture some amounts of water which will be eventually evaporated. Secondly, some quantity of water is  absorbed by the tree's roots. Also,Tree roots hold the soil in place, reducing the movement of sediment that can shrink river channels downstream..

The process of deforestation will lead to dislodging of the topsoil. this makes the  topsoil unstable and reduces its capacity to hold down the water

6 0
3 years ago
Animal cells are considered eukaryotic and bacteria cells prokaryotic. This is because:.
Juli2301 [7.4K]

Answer: This is because animals (like humans) have more organelles to store in our bodies than bacteria. This makes sense because without all of our organelles we wouldn't be able to function properly. This is just another one of those form=function things.

-AnaMae10

3 0
2 years ago
Read 2 more answers
The normal value of a hormone in a species is typically 10-20 units per ml of blood. A test is conducted three times, on an indi
-Dominant- [34]

Answer:

Due to genetic defects, a family history of hormone imbalances, or certain diseases.

Explanation:

According to the data, the blood is deficient in hormones which is due to a number of factors such as genetic defects, a family history of hormone imbalances, or certain diseases etc. The normal person has  10-20 units of hormones per ml of blood in their body, if the body has low in hormones the body does not perform its function properly that leads to certain diseases such as obesity, osteoporosis, and cardiovascular disease so we can say that genetic defects, hormone imbalances, or certain diseases are the causes of low in hormones.

8 0
3 years ago
The principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater is _______.
max2010maxim [7]

Salinity refers to the principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater. It is the measure of all the salts dissolved in water.

5 0
3 years ago
Read 2 more answers
Characters that are passed from offspring are called________<br> (Brainliest included)
Alchen [17]

Answer:

Heredity

Explanation:

Im not sure how to explain it lol but thats the answer

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which body systems depend on the nervous system?
    11·1 answer
  • Which type of reproduction is MOST advantageous for the production of a wide variety of different organisms? A) budding B) fragm
    12·2 answers
  • How are species introduced to new ecosystems?
    12·2 answers
  • Gary fart está muerto en la cruz de 3 días y un día de la CASA en el shaddai y el no muerto 3de en la cruz de la muerte de la CA
    7·1 answer
  • What is the difference between the Domains Eukarya and Bacteria
    10·1 answer
  • How is Bohr's atomic model different from Rutherford’s model?
    5·2 answers
  • I NEED GELP ASAP!!!!
    13·1 answer
  • Which of the following models shows the flow of energy in a woodland ecosystem? Select the two correct answers A.sun → tree → ca
    7·1 answer
  • Which elements atoms have 2 electrons in the first energy level and 4 electrons in the second energy level?
    8·1 answer
  • What is the mass of the green cone on gizmos
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!