Practical Exam

How many nanometres is each division on an ocular graticule under a 4x objective?

4x objective, each division on ocular is 25 nm

How many nanometres is each division on an ocular graticule under a 10x objective?

10x objective, each division on ocular is 10nm

How many nanometres is each division on an ocular graticule under a 40x objective?

40x objective, each division on ocular is 2.5nm

https://quizlet.com/278653947/rat-digestive-system-diagram/

LIVER

Cleans your blood, makes bile (for digestion), and stores energy.

• KIDNEYS:

• Filter waste from your blood and make pee.

• SPLEEN:

• Helps fight infections and filters old blood cells.

• PANCREAS:

• Makes enzymes to digest food and hormones like insulin (for blood sugar).

• DUODENUM:

• The first part of the small intestine where lots of digestion happens.

• ILEUM:

• The last part of the small intestine where nutrients are absorbed into the blood.

• CAECUM:

• A pouch at the start of the large intestine, important for some digestion (especially in herbivores). It plays a crucial role in the fermentation of plant material

• VERMIFORM APPENDIX:

• A small pouch attached to the caecum, its exact function isn't fully clear but it might have a role in immunity.

• COLON:

• The large intestine, it absorbs water and electrolytes from leftover food and forms stool.

• Small Intestine:

• This is the primary site for chemical digestion and nutrient absorption.

• Large Intestine:

• Consists of the cecum, colon, and rectum. Its main functions include water reabsorption and the formation of feces