What laboratory tools used to look the internal organs of animals?

There isn't one single tool used to "look" at the internal organs of animals in a laboratory setting. The methods used depend on what you want to see and how detailed your observation needs to be. Here are some common methods and the tools involved:

1. Dissection: This is the most basic method, and involves cutting open the animal to expose the organs.

* Tools: Scalpel, scissors, forceps, dissecting needles, probes, tweezers, dissecting microscope.

2. Imaging Techniques: These techniques allow us to view the internal organs without having to cut the animal open.

* X-ray: Uses electromagnetic radiation to produce images of the bones and some organs.

* CT scan (Computed Tomography): Uses X-rays and a computer to create detailed 3D images of the body.

* MRI (Magnetic Resonance Imaging): Uses magnetic fields and radio waves to create detailed images of organs and tissues.

* Ultrasound: Uses sound waves to create images of organs.

* Endoscopy: Involves inserting a flexible tube with a camera (endoscope) into a body cavity to view the organs directly.

* Fluoroscopy: Uses X-rays to create real-time images of the organs during a procedure.

3. Histology: This involves studying the tissues of organs under a microscope.

* Tools: Microscope, microtome (for slicing tissue samples), stains, slides, coverslips.

4. Molecular Biology Techniques: These techniques allow us to study the molecules within organs.

* Tools: PCR machines, electrophoresis equipment, DNA sequencers, spectrophotometers.

Important note: The specific tools used depend on the size and type of animal, the organ being studied, and the level of detail required. Ethical considerations are paramount in animal research, and all procedures must be conducted humanely and in accordance with relevant guidelines.