The middle portion of the thoracic cavity that houses the heart is called____. D

ID: 99590 • Letter: T

Question

The middle portion of the thoracic cavity that houses the heart is called____. Define "retroperitoneal" and give an example of a retroperitoneal organ. The lever that adjusts the amount of light that enters through the light source is called____. The rotating nose piece contains the pieces of the microscope which will magnify the specimen. These places are called____. a. Oculars b. Objectives c. Adjustors If you looking through a light microscope, the Oculars are set at a magnification of 15 x, and the objectives are set at a magnification of 10x. What is the total magnification?

Explanation / Answer

answer

explanation

1. the middle portion of thoracic cavity that house the heart is called

mediastinum

The mediastinum

contains organs such as

the heart and its vessels,

of the central chest.

Retroperitoneal

It space (retroperitoneum) is the anatomical space

in the abdominal cavity behind (retro) the peritoneum.

Organs in this space include

kidneys.

pancreas

ureters.

rectum.

The lever that adjust the amount light that enters through the light source

iris diaphragm

It is a shutter located between the condenser and the light source.

It adjust amount of light by moving control lever left and right