Table of Contents
External and Internal Anatomy of Snail
The external anatomy of a snail includes a shell, a head, and a foot. The shell is made of calcium carbonate and is secreted by the snail’s mantle. The head contains the eyes, antennae, and a mouth.
The mouth is equipped with a radula, a tongue-like structure covered in tiny teeth. The foot is used for locomotion and has a variety of sensors that allow the snail to feel its environment.
The internal anatomy of a snail includes the brain, the heart, the stomach, and the lungs. The brain is located in the head and is responsible for controlling the snail’s movements and sensing its environment.
The heart is located in the upper part of the body and pumps blood through the lungs and the rest of the body. The stomach is located in the lower part of the body and is used to digest food. The lungs are located at the top of the body and allow the snail to breathe.
Exoskeleton
An exoskeleton is an external skeleton that supports and protects an animal’s body. Animals with exoskeletons include insects, arachnids, and crustaceans. The exoskeleton is made up of chitin, a tough, waterproof substance.
External Anatomy of the Eye
- The external anatomy of the eye is composed of the eyelids, the eyelashes, the eyebrows, and the lacrimal apparatus.
- The eyelids are the thin, fleshy folds of skin that cover and protect the eye.
- The eyelashes are the long, thin hairs that grow on the eyelids and help to keep debris and foreign objects out of the eye.
- The eyebrows are the hair-like growths above the eyes that help to protect the eyes from the sun and wind.
- The lacrimal apparatus is a collection of structures that produce and secrete tears, which help to lubricate and protect the eyes.
Internal Anatomy of a Female
The pelvic cavity is located inferior to the umbilical region and anterior to the sacrum. The pelvic cavity is bounded by the pelvic bones (ilium, ischium, and pubis) and the coccyx.
The pelvic cavity contains the following organs:
The urinary bladder
The urethra
The prostate gland
The rectum
The vagina
The uterus
- The urinary bladder is a muscular, sac-like organ that stores urine.
- The urethra is a tube that carries urine from the bladder to the outside of the body. The prostate gland is a male sex gland that surrounds the urethra.
- The rectum is the final segment of the large intestine.
- The rectum stores feces until they are eliminated from the body.
- The vagina is a muscular, tubular organ that extends from the pelvic cavity to the outside of the body.
- The vagina is the female reproductive organ. The uterus is a hollow, muscular organ that is located in the pelvic cavity.
- The uterus is the female reproductive organ.
Explain in detail:
An atom contains protons, neutrons, and electrons. Protons and neutrons are found in the nucleus, and electrons orbit the nucleus. The number of protons in an atom determines what element it is.
For example, carbon has six protons, and oxygen has eight. Protons and neutrons are held together by nuclear forces, and electrons orbit the nucleus because they are attracted to the protons.
