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
jeka57 [31]
3 years ago
15

How do veins return blood to the heart? select all that apply?

Biology
1 answer:
Jobisdone [24]3 years ago
6 0
A relatively small blood pressure gradient is generally insufficient to move blood through the veins under given conditions, thus venous return must be facilitated by valves within veins and two "pumps." ... As skeletal muscles contract, veins are squeezed to help propel the blood toward the heart.
You might be interested in
WILL THUMBS UP RIGHT ANSWER!!
NISA [10]
True that should be the answer

5 0
3 years ago
Read 2 more answers
Define the following terms. Give an example of an organism that is described by each term. a. benthic b. pelagic c. sessile d. m
taurus [48]

Answer:

(A) Benthic- Benthic refers to the lowest or the bottom zone of the water body such as seas, and oceans. The organisms existing under such extreme pressure conditions are commonly known as benthic organisms. For example, corals and bivalves.

(B) Pelagic- Pelagic refers to the upper top portion of a water body, covering the open sea areas. The organisms existing in this region include dolphins and sharks.

(C) Sessile- Sessile refers to the property where an organism is stationary and cannot move freely from one place to another. These are known as sessile organisms such as coral polyps, Mussels.

(B) Mobile- refers to the property by which an organism can move freely in any direction it wants. For example, fishes, dolphins.

(E) Evisceration- It is a specific type of property where organisms can eject their internal organs in order to protect themselves from predators. for example, Sea cucumbers.

(F) Chitin- Chitin is a hard shell that is present in various organisms, forming its exoskeleton, for defense purposes. For example, arthropods.

6 0
3 years ago
A botanist is trying to determine the best medium for growing new juveniles orchids.He collected data on the four different type
nevsk [136]

Medium 3 bc it progressed the most

7 0
3 years ago
All Nucleotide elements
Daniel [21]

Answer:

The phosphate groups allow the nucleotides to link together, creating the sugar-phosphate backbone of the nucleic acid while the nitrogenous bases provide the letters of the genetic alphabet. These components of nucleic acids are constructed from five elements: carbon, hydrogen, oxygen, nitrogen, and phosphorous.

Explanation:

8 0
2 years ago
Which of the following is the mean number per cross of F2 generation offspring that are the result of crossing over
lara31 [8.8K]

Answer: B 2.2

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • please someone help in the metric system, what do kilogram, kilometer, and kilocalorie have in common?
    9·1 answer
  • 28) The graph below shows how the activity of an enzyme changes at different temperatures.
    5·1 answer
  • How do ciliates move?
    14·1 answer
  • What is the correct term for splitting an atom to release nuclear energy?
    5·2 answers
  • Which change absorbs heat?
    5·1 answer
  • Which of the following plant cell structures could not be seen when using the 10X objective of the compound microscope?
    7·1 answer
  • 20. Edward Lambert, an Englishman, was born in 1717. Lambert had a skin disorder characterized by very thick skin that was shed
    12·1 answer
  • Fluvial Processes<br> 1. What type of drainage pattern is shown in the following image?
    5·1 answer
  • When blood pressure receptors sense a loss of blood pressure, they ________ their firing rate to the medulla.
    5·1 answer
  • quizlet i]n the heart, valves are located in the heart, valves are located just between the ventricles and the arteries. just be
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!