1. Which of the following accurately describes a typical human karyotype?

1 answer:

6 0

Human cells contain 23 chromosomes and has a total of 46 pairs of chromosomes. The answer is letter A. Depending on the length and morphology, it has seven groups. They are arranged from largest to smallest. It has 22 pairs of homologus chromosomes known as autosomes and 1 pair of sex chromosomes, a total of 23 chromosomes. A male karyotype has a total of 46 chromosomes and gives a pair of XY while a female karyotype has a total of 46 chromosomes and gives a pair of XX. These pairing are responsible to the gender of the offspring.

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Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heart

zlopas [31]

Answer:

SA Node

Inter-nodal Pathways

AV Node

AV Bundle

Bundle Branches

Purkinje Fibers

The SA nodes functions first for setting pace for the heart, then the inter-nodal pathway make link b/w SA and AV node. AV node is site of delay when contraction of atria occurs. AV bundle is the mean of electrical link b/w atria and ventricle. The conveying of impulse to the inter-ventricular septum occurs through bundle branches, while conveying of impulse throughout and along the walls of ventricle occurs through Purkinje fibers.

7 0

3 years ago

What is the mean of the data set [3,2,2,12,6,5,14,4]? A.2 B.4 C.6 D.7

zysi [14]

Answer:

Explanation:

To find the mean of a data set, add all the values in the set together, and then divide the result by the number of values in the set.

3 + 2 + 2 + 12 + 6 + 5 + 14 + 4 = 48

There are 8 values in the data set.

48/8 = 6

So the mean of the data set is 6.

8 0