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
irina [24]
4 years ago
13

Precapillary sphinctersa. serve as valves in veins. b. are found in the tunica media. c. carry blood under high pressure. d. con

trol the blood flow into capillary beds. e. are voluntary structures.
Biology
1 answer:
KengaRu [80]4 years ago
3 0

Answer:

D. Control the blood flow into the capillary bed

Explanation:

The degree of filling of the capillary bed and level of arterial pressure within the vascular system is determined mainly by the degree of tonus (firmness) in the smooth muscle of the arterial wall. Arterioles have relatively narrow lumina, thick muscular wall and precapillary sphincter.

You might be interested in
Why is the habitable zone important for Exoplanets?
Misha Larkins [42]

Answer:

A planet's atmospheric conditions influence its ability to retain heat, so that the location of the habitable zone is also specific to each type of planet.

Explanation:

5 0
3 years ago
4. Scientists classify clams as consumers. Which observation about clams provides the strongest evidence for this classification
Mars2501 [29]

Answer:

b, this is because a consumer, is something that consumes something, and the clam consumes the energy and nutrients when it filters the particles in from the water. Because it consumes these, it is a consumer for that reason. So, the answer is b. Hope this helps!!!

8 0
3 years ago
What is it called when a trait helps a animal survive
katovenus [111]
I believe that it's called an adaptation. 

Hope I helped you
3 0
3 years ago
Read 2 more answers
An area at the rear of the frontal lobes that controls voluntary movements is called the :
vichka [17]
<span>An area at the rear of the frontal lobes that controls voluntary movements is called the motor cortex. The correct option among all the options that are given in the question is the third option or option "C". The other choices are incorrect. I hope that this is the answer that has actually come to your help.</span>
5 0
3 years ago
Ozone depletion is caused by the greenhouse effect true or false
Bad White [126]
The answer is true......
4 0
3 years ago
Read 2 more answers
Other questions:
  • _____ coined the term sociology and first elaborated the positivist basis of sociology.
    7·1 answer
  • _____ communicate with the body to ensure homeostasis
    12·2 answers
  • In 2003 what was archived by the human genome project
    5·1 answer
  • How are pounds converted to newtons? Give an example.<br> can someone help me
    6·1 answer
  • A gyre is _____.
    10·1 answer
  • Food chains are usually short mainly because A) only a single species of herbivore feeds on each plant species. B) local extinct
    9·2 answers
  • Animals adapted for surviving waves, as well as sudden changes in water level and temperature, would be found in the
    15·2 answers
  • What would happen if one of the chromosomes in a homologous pair failed to separate from its homologue at the end of metaphase I
    15·2 answers
  • help po plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
    12·1 answer
  • What is an ecosystem?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!