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Musya8 [376]
4 years ago
5

The concentric rings of calcified intercellular substance arranged around Haversian

Biology
1 answer:
Serga [27]4 years ago
4 0

The concentric rings of calcified intercellular substance arranged around Haversian  canals are called Lamellae

Explanation:

The microscopic tubes situating at the outer region of cortical bone which gives way to the nerves and blood vessels to travel through it is referred to as Haversian canals.  The channels of the canals are composed of concentric substance called Lamellae.

It surrounds the nerve cells and vessels of bones and makes a communication with cells of the bone through canaliculi. Lamellaes compose concentric rings made up of calcified intercellular substance around the tissue of bones.

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Please help I need to turn in this paper asap the paper
Nadya [2.5K]

Atoms gain electrons to form anions.

Atoms lose electrons to form cations.

Back in middle school, my chemistry teacher taught me a good way to remember whether an ion was a cation or an anion. When an atom loses an electron, it becomes positive, and when an atom gains an electron, it becomes negative.

Cation sort of sounds like “cat,” which is positive (Yay! Cats!).

Anions, on the other hand, sounds like “onion,” which is negative (Ew! Onions!).

There’s other ways of memorizing it, but this way was the easiest for me.

-T.B.

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4 years ago
I need help with this practice problem solving If you can, explain your answer step by step
Margarita [4]

Question:

Solution (explanation):

Greenhouse gases are those gases that accumulate in the Earth's atmosphere and absorb infrared energy from the Sun. This creates the so-called greenhouse effect, which contributes to the increase in the global temperature of the planet. Now, the higher the concentration of greenhouse gases, the greater the retention of heat. These extra gases increase the natural greenhouse effect and cause global warming which leads to a global change in the climate.

Answer: we can conclude that the correct answer is:

Greenhouse gases

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2 years ago
Why is the "dorsal-ventral" axis not synonymous with the "posterior-anterior" axis in the whole human nervous system?
Nutka1998 [239]

Answer:

The ventral side is towards the belly side

The Dorsal side is back to the belly side

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Posterior is after or coming after to the belly side.

Explanation:

The ventral side is associated with the animal or a person belly side which related to the organism digestion and respiratory organs.

The anterior is the before or in front of side position which is associated with the front line of an organism.

The posterior side is related to the after side or it is opposite to the anterior position of an organism.

It is depend on the organism position, that these sides are related to each other in some instances. In some cases these are orthogonal in some times.

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Answer:

The correct option is D. Drug-resistant populations of microbes arise when  exposure to drugs selectively kills sensitive cells, allowing overgrowth of resistant cells.

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Drug- resistance can be described as a mechanism through which an organism can overcome the effect of a drug.

Usually, exposure of a drug again and again to a population of microbes will make the microbes resistant to that drug. The cells of the microbes undergo some change to overcome the effect of that particular drug.

A population of drug-resistant microbes might occur when the sensitive microbes get killed by the drug and resistant strains remain alive.

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4 years ago
A planet experiences a change in its climate, making the air cooler. Because of the cooler air, more snow falls than in the past
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C global warming because it’s like climate
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