The Body Systems of a Fruit Bat

By: Alyssa Forte

Fruit Bat

Fruit Bats are also known as Megabats or old world fruit bats. They can be found in areas where food is sufficient. In forests with fruit treats, the abundance of fruit bats is confident there. Fruit Bats live in colonies, but with sub colonies to form close bonds within the group. Most bats are considered blind, but the fruit  bats have the best sense of smell, but have the worst vision.

Integumentary System

The Integumentary system is the outer body covering of an animal and protects the body from damage. Its functions consistent of cover, protection, stream-lined body shape, exchange of gases, wastes, and heat between interior and exterior environment, and possible camouflage. The integumentary makes up the skin, hair, nails, feathers, annd scales of an animal. The Integumentary system protects against mechanical injury, infection, excessive heat or cold, and drying out. Fruit Bats have a outer covering of fur around the body and a skin between the bones of the wings. The Fruit bats has claws developed and that helps with digging out tough meat of food, which is there knife to cut things.

Skeletal and Muscular System

The skeletal and muscular system have many funtions to do to support and to help move. Bones of the skeletal system have two functions; strength and flexibility. The skeletal and muscular system support the body, gives the bod structure, and alllows for movement ot occur. The skeletal system is strong, protecting the inner organs, and acting as a lever and attachment for muscles. Muscles aids the venous system with the return of blood to the heart, preventing sluggishness and they also provide some body warmth.

Bat bones seem to be lighter and slender and some bones are reduced. Bats also have created cranial bones for additional lightness. The wing is supported by the bones of the arm and one of the fingers. A bat's wing membrane is supported by the arm and by four highly elongated fingers. The lightness of the bones allow the wings to move in the air as the bat is flying. Bats have the fastest mammal muscle. The superfast muscles in bats occur in the throat and enable a crucial hunting behavior, which is echolocation; the bat sends out sound waves and listens for echoes bouncing off prey. The muscles allow the fruit bat to move by having strong wings and being able to increase speed with the amount of muscle the fruit bat has.

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Nervous System

The nervous system is for communication and sensation in your brain and body. The main functions of the nervous system is control/regulation of body fuctions, communtication within the body, and sense and respond to environment.

Fruit bats have the fives senses human doe; taste, touch, hear, smell, and vision. They use the five senses for locating food items, identifying roost sites and other bats, including family member or a prey of some sort. Fruit bats have excellent hearing, but if the ears are blocked, then they cannot maneuver. The brain of the bat carries out functions in a split, giving them ability to picture their surroundings quickly. Fruit bats have great vision to help capture light, but usually bats are blind and use their senses to function, but the fruit bats have all five senses.

Fruit bats are also considered to have a sixth sense, unlike humans. Bats use the echoes of their calls to locate obstacle, echolocation, to describe this sensory ability. This shows that bats see with their ears when their face is covered or unable to view.

Respiratory System

The Respiratory System is the gas exchange of the body. The function of the system is to exchange gases between internal and external environment. The respiratory system in a human sustains cellular respiration by supplying oxygen to body cells and removing carbon dioxide waste from cells. For humans, they use lungs for breathing. The internal respiration is the exchange of gases between the blood and body's cells and the external respiration is the exchange of gases between the atmosphere and the blood.

In a fruit bat, they have lungs and that allow them to breathe, the exchange of air. The respiratory system of a bat has lungs that enable it to bring in oxygen and gets rid of carbon dioxide waste. They also have a diaphragm that contracts and the rib cage rises, pressure is created in the chest cavity, causing the lungs to expand and air to be let in. They also have a trachea to direct the air into the lungs.

Circulatory System

The circulatory system is transportation. The functions of the circulatory system are to distribute gases, nutrients, minerals, and vitamins throughout the body and transportation of chemicals (hormones) and heat through body. The blood vessels in a fruit bat can dilate and constrict; temperature. The fruit bats, like most mammals, have a four chambered heart. A four chambered heart means that there are two atria and two ventricles. The heart of a fruit bat is very large compared to the rest of the body. The right atrium is large and holds large amounts of venous blood. The muscle fibers of the cardiac tissue are thing so large amounts can be packed in a given amount of muscle tissue and this lets the heart have powerful functions. Fruit bats also have the ability to control the quantity of blood circulating in the wing at any time and this allows the blood to stay in the body during inactivity.
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Digestive and Excretory sytem

The function of the digestive system in a human is to ingest food, break food down for absorption, elimination of what can't be digested. In the human the teeth and jaw are used mechanically for chewing food to break down into smaller pieces and saliva helps with that. The Peristalsis is a muscle of digestive tract contract to move food through the digestive system. The stomach of a human churns the food and takes up to 2-24 hours. The small intestine are next and they are mechanical digestion with movement and a majority of absorption occurs here. The pancreas, liver, and gallbladder help with digestive, but the last part is the large intestines and they absorb water and fecal waste formation.

In a fruit bat, the digestive system is strong and fast and allows the bat to eat non-stop and that food consumes 5% of the body fat. Fruit bats also have mouths, like humans, to help digest the food that they eat like fruit or leaves. The saliva helps with softening the food, but the tongue is strong for crushing fruit and squeezing the juice out. Then it goes to the stomach to the small intestine which has villi to absorb nutrients and water required. And then it goes to the large intestine and does not prepare a lot of faeces because there are enough. The digestion takes about 12-34 minutes long!

The functions of the excretory system are to remove toxins and wastes from body, regulate water/fluids and salts in the body, and maintains pH of blood. The most important structure of the excretory system is Nephron because it contains capillaries and where filtering occurs. The kidneys are a part of the excretory system and they filter out wastes, water, and salt from blood.

Reproduction system

In the male reproduction system, the reproductive glands are called testes and are located outside the body cavity in a pouch called the scrotum. In males there are sperms and they develop in the testes in the Seminiferous tubules. The sperm then travels to the epididymis and are stored , travel through the vas deferens, then the two vas deferens join together and enter the urethra. For males, they have testosterone and it is a steroid hormone. You need testosterone because it is necessary for the production of sperm, causes secondary sex characteristics; hair, broader shoulders, muscles, and a deeper voice. Gonadotropin, Follicle-stimulating, and luteinizing hormones influence testosterone production.

In the female reproduction system, they have eggs, which are produced in the ovaries. The egg travels to oviduct (connects to uterus). In the female there is the cervix and it's the narrow opening of the uterus into the vagina, which leads to the outside of the body. Estrogen and progesterone are steroid hormones made by ovaries and estrogen causes secondary sex characteristics: breasts, wider hips, body fat, and menstruation.

For bats the reproduction of them occur during the spring time because it has the warmest temperature and food is not hard to find.


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