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djyliett [7]
3 years ago
12

In babies born prematurely, pulmonary surfactant may not be present in adequate amounts ______.

Biology
1 answer:
ollegr [7]3 years ago
6 0

Answer: due to insufficient exocytosis in the type II alveolar cells

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Which of these is not a property of lymphatic capillaries?
Inessa05 [86]

Answer:

They are smaller than blood capillaries.

Explanation:

Lymphatic capillaries drains the extracellular fluid present between the cell spaces. The fluid is known as lymph as it enters the lymph capillaries. These capillaires drains into lymph vessels that drains to lymph nodes and lymph ultimately enters the venous circulation.

Lymphatic capillaries are slightly larger than blood vessels and these capillaries have close ends. The walls of lymph capillaries are made up  of endothelial cells. The endothelial cells overlap in lymph vessels and when the pressure in ECF is greater these cells move and create a sort of gap for the movement of ECF inside the lymph capillary but when the pressure inside the capillary is greater these cells again overlap and does not allow the lymph to move outside of capillary. Thus lymph capillaries only allow the ECF to enter the capillary but does not allow the lymph to go out from capillary. Lymph capillaries have greater internal pressure than blood vessels.

7 0
3 years ago
which sparrow would have the advantage if all fod sources were to disappear on the hypothetical island, leaving only marbles? if
nalin [4]

Answer:

The spikes would be pointed and long, strong, to be able to break the surface of the marble and the particles.

Explanation:

The adaptation of the beaks is the selection of the fittest, in nature the species that best adapts and evolves according to the changes in the environment that surrounds it survives.

This was mentioned by Charles Darwin.

4 0
3 years ago
Question 3 Unsaved
Nostrana [21]
The answer is conduction
4 0
3 years ago
Which of the following is a living factor in an ecosystem that could limit the size of a raccoon population?
Gennadij [26K]

Answer:

what are the options

the only thing i can think of without seeing the options is Competition from other animals.

Explanation:

5 0
3 years ago
Read 2 more answers
Christa is now in her 43rd week of pregnancy. her unborn baby is considered to be
Fynjy0 [20]
<span>Christa carrying the baby to the 43rd week would make her baby postmature. Postmaturity is a common phrase that simply means the baby has been in gestation for longer than 42 weeks or more than 294 after the first day of the mothers last period. This is not very common, roughly 6 percent of babies are born at 42 weeks or any later.</span>
6 0
3 years ago
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