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Lapatulllka [165]
3 years ago
11

How does the bone protect the immune system? please help

Biology
1 answer:
Ksivusya [100]3 years ago
6 0

Answer:

The bone marrow(which is found in bones) produces cells called lymphocytes which is an essential part to the immune system. The lymphocytes circulate in your blood, and there are 2 types of lymphocytes: T and B cells. The B cells produce molecules that destroy viruses or bacteria

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Unequal sharing of electrons between atoms
Luden [163]

Answer:

A <u><em>polar covalent bond</em></u> is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal. In a polar covalent bond, sometimes simply called a polar bond, the distribution of electrons around the molecule is no longer symmetrical.

Explanation:

<em>Hope This Helps!</em>

4 0
2 years ago
....... is the wall which separates right and left side of the heart .​
Sonja [21]

Answer:

septum

Explanation:

6 0
2 years ago
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Which one of the following molecules can MOST easily pass through the plasma membrane unassisted?
Anton [14]

The molecule that can MOST easily pass through the plasma membrane without assistance is carbon dioxide (CO2). Diffusion is a type of passive transport that occurs when molecules move in favor of a concentration gradient.

During diffusion, molecules move high concentration to a region of low concentration.

Oxygen (O2) and carbon dioxide (CO2) are non-polar gasses that move across cell membranes by a process called simple diffusion.

Simple diffusion is a type of passive transport that does not require energy to move substances across cell membranes.

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brainly.com/question/1619908?referrer=searchResults

4 0
2 years ago
How does flouride cause kidney deasies
SCORPION-xisa [38]

Answer:

Hepato- and nephrotoxicity of fluoride have been demonstrated in animals, but few studies have examined potential effects in humans. This population-based study examines the relationship between chronic low-level fluoride exposure and kidney and liver function among United States (U.S.) adolescents. This study aimed to evaluate whether greater fluoride exposure is associated with altered kidney and liver parameters among U.S. youth.

This cross-sectional study utilized data from the National Health and Nutrition Examination Survey (2013–2016). We analyzed data from 1983 and 1742 adolescents who had plasma and water fluoride measures respectively and did not have kidney disease. Fluoride was measured in plasma and household tap water. Kidney parameters included estimated glomerular filtration rate (calculated by the original Schwartz formula), serum uric acid, and the urinary albumin to creatinine ratio. Liver parameters were assessed in serum and included alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, blood urea nitrogen, gamma-glutamyl transferase, and albumin. Survey-weighted linear regression examined relationships between fluoride exposure and kidney and liver parameters after covariate adjustment. A Holm-Bonferroni correction accounted for multiple comparisons.

The average age of adolescents was 15.4 years. Median water and plasma fluoride concentrations were 0.48 mg/L and 0.33 μmol/L respectively. A 1 μmol/L increase in plasma fluoride was associated with a 10.36 mL/min/1.73 m2 lower estimated glomerular filtration rate (95% CI: −17.50, −3.22; p = 0.05), a 0.29 mg/dL higher serum uric acid concentration (95% CI: 0.09, 0.50; p = 0.05), and a 1.29 mg/dL lower blood urea nitrogen concentration (95%CI: −1.87, −0.70; p < 0.001). A 1 mg/L increase in water fluoride was associated with a 0.93 mg/dL lower blood urea nitrogen concentration (95% CI: −1.44, −0.42; p = 0.007).

Fluoride exposure may contribute to complex changes in kidney and liver related parameters among U.S. adolescents. As the study is cross-sectional, reverse causality cannot be ruled out; therefore, altered kidney and/or liver function may impact bodily fluoride absorption and metabolic processes.

hope this helps

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6 0
2 years ago
What is solid waste produced by a sewage-treatment plant is called
Goryan [66]

sludge

<span>Sewage treatment is also known as wastewater treatment. It is a process whereby contaminant is removed from wastewater. Thus, chemical, biological and physical process are commonly used to remove contaminants from wastewater and the by-products of wastewater treatment is usually inform of solid waste known as sewage sludge.</span>

3 0
2 years ago
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