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
Vedmedyk [2.9K]
3 years ago
13

Brain blood flow autoregulation ________. a. is less sensitive to pH than to a decreased oxygen level b. causes constriction of

cerebral blood vessels in response to a drop in systemic blood pressure c. is abolished when abnormally high CO2 levels persist d. is controlled by cardiac centers in the pons
Biology
2 answers:
Olin [163]3 years ago
7 0

Answer:

b. causes constriction of cerebral blood vessels in response to a drop in systemic blood pressure

Explanation:

No matter what happens or fluctuations occur in the blood pressure of body the blood pressure to the brain is always kept constant by the necessary changes and means possible. The blood value is always maintained at 50mL per 100g of Brain Tissue. The constriction of blood vessel keep the blood pressure normal to the brain in case of low blood pressure. Otherwise, it can have deadly consequences.

solmaris [256]3 years ago
7 0

Answer:

Answer is C. Is abolished when abnormal high CO2 levels persist.

Explanation:

Autoregulation can be described or explained as an ability of some organs in the body, especially the brain in maintaining relatively constant blood flow despite changes in a pressure known as perfusion pressure.

Note that, the word 'perfusion' can be explained as the delivery of blood to a tissue through the circulatory system. The pressure that operate in this, i.e , that brings about the delivery of blood to a tissue is known as perfusion pressure.

In this case, it should be understood that, the persistence of abnormal high CO2 levels is one of the states that can abolished brain blood flow autoregulation. Others are brain tumor or stroke.

You might be interested in
The characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it _________
seropon [69]

Answer: ... it stores its genetic information as RNA and not as DNA and can synthesize ...

Explanation:

In contrast with other viruses, HIV can't be got rid of completely from the human body , even with treatment.

So like stated above, the characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it stores its genetic information as RNA and not as DNA and can synthesize DNA from an RNA template it carries to override it hosts DNA.

So once one get HIV, such have it for life. HIV attacks the body's CD4 cells (T cells) that wall of the immune system that specifically help the immune system fight off infections.

The mechanism of the HIV storing its genetic information as RNA rather than as DNA , it replication and infection pattern has made it standout to become a global treat.

6 0
3 years ago
3. If you teleport yourself instantly to another location, is the teleported person still you?
Ivanshal [37]

Answer:

yes

Explanation:

6 0
2 years ago
Read 2 more answers
One group of reptiles, characterized by the fossil Archaeopteryx, led to the evolution of _____.
Mamont248 [21]

One group of reptiles, characterized by the fossil Archaeopteryx, led to the evolution of birds. The correct answer is birds

7 0
3 years ago
Read 2 more answers
1 pts
Sergio039 [100]

Answer:

AMINO ACID, LIDID, CARBOHYDRATE

8 0
3 years ago
X has successfully been transmitted to your body; you are now infected. All of the following among A-D are possible consequences
Natasha2012 [34]

The complete options to the question includes:

A.You never show any symptoms of disease and there is no sign of the pathogen in your body.

B.You exhibit mild symptoms of disease and the levels of the pathogen in your body are quickly reduced and eliminated.

C.You succumb to the worst effects of the disease but survive due to administration of antimicrobial agents.

D.You never show any symptoms of disease, but the pathogen persists in your body.

E.There are no exceptions, A-D are all plausible outcomes.

Answer: The correct option is A (You never show any symptoms of disease and there is no sign of the pathogen in your body).

Explanation:

Infectious diseases occurs when an individuals system is invaded by pathogenic microorganisms (virus,bacteria,fungi and parasite). These microorganisms may or may not cause disease but this depends on the healthy state of the host. They can also be transmitted from one person to another.

To explain the options why all are plausible outcomes when X has successfully been transmitted into the body except A includes:

B) option B can occur when the immune system of the host is able to combat X.

C.) Option C can occur when antimicrobial is given to suppress the activities of X

D) option D can occur when the individual may become an asymptomatic carrier of X. ( Individual shows no symptoms and signs of disease caused by X but the pathogen is still present in the body).

But option A is not possible as X must be present to show there was a transmission.

6 0
2 years ago
Other questions:
  • Real life example of chloroplasts
    15·1 answer
  • Cells are limited from growing too large because
    5·1 answer
  • Some organisms are capable of asexual or sexual reproduction. under favorable conditions, reproduction proceeds asexually. when
    5·1 answer
  • What type of boundary recycles crust into the mantle?
    13·1 answer
  • Adaptative features of plant and animal cells
    5·1 answer
  • How Do You Learn Through Operant Conditioning? Which of the following scenarios illustrate how biology constrains reinforcement?
    15·1 answer
  • Which of the following is true about transcription?
    12·1 answer
  • We humans belong to the ………… kingdom of life.
    15·1 answer
  • so my grandfather wanted brownies since the cheesecake was gone... they are currently making... I told them that they are lucky
    6·1 answer
  • I need help answering this question
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!