What are the structural characteristics of birds adapted to the flying lifestyle?

Exterior features: Body shape: Streamlined, which can reduce the drag of the air when flying.

Feathers: The feathers of the whole body of the domestic pigeon are mainly two kinds of feathers and down feathers, and the feathers are mainly used for flight; Down feathers have the effect of maintaining body temperature.

Wings: The forelimbs become wings, the wings are fan-shaped, and there are several rows of large feathers, and the wings are the flight organs of the domestic pigeon.

Structural features. Bones: Some are thin, some are healed together, and most of the longer bones are hollow and filled with gas, which can not only reduce the weight of the body, but also strengthen the firmness, and are suitable for flying life.

Muscles: There are well-developed muscles on both sides of the keel process, the pectoral muscles, which can complete the flight action by pulling the wings.

Physiological characteristics. Digestive system: Birds eat very large quantities, have a strong digestive capacity, and have a short rectum.

Respiratory system: The air sac assists breathing, and double breathing is performed.

Excretory system: There is no bladder and can urinate in time.

Circulatory system: The heart muscle is well developed and the heart rate is high, which can transport nutrients and waste products for the flight.

The whole body of the bird is designed for flight". The external morphology, internal structure, and physiological functions of birds are all suitable for air life. Quoted from.

Categories: Education, Science, >> Learning Aid.

Problem description: What are the characteristics of birds that are conducive to their flight life?

Analysis: 1The body is streamlined - reducing air resistance.

2.The body carries feathers on its back - good for heat preservation and flight.

3.Forelimbs turn into wings - fanning the air.

4.Well-developed pectoral muscles - facilitates the completion of the Flying Action Author Album.

5.Skeleton: Keel burst.

Long bones hollow – good for weight loss.

6.Large appetite and a well-developed digestive system - good for energy absorption.

7.Short rectum - timely elimination of stool - reduction of body head macrosity.

8.No bladder, urine is excreted with feces - weight loss.

9.The heart has four chambers – which facilitates the transport of oxygen.

10.Double breathing (repentance with lung breathing, air sacs to assist breathing) quack, even write a comprehensive bar, occasionally find a drop note pinching Actually, I just finished talking about it two days ago, is it right to dig in the elemental creatures? Well, let's not talk about it.

The ability of birds to fly depends on the structural characteristics and coordination of the various organ systems of birds. 1. The wings of birds. The wings of birds are the first condition for them to have flying skills.

Under the same conditions of having wings, some birds can fly very high, very quickly, very far; Some birds can only hover, glide, or even fly at all. The structure of a bird's wings is no less complex than the bird itself. If the feathers of the bird's wings are constructed, the principle of aerodynamics can be skillfully applied, and when they are fanning up and down or pressing up and down, they can push the air and fly forward using the principle of reaction; The structure of the feathers is reasonable, which can effectively reduce the air resistance encountered during flight, and some can also play a role in de-trembling and noise reduction.

There are great differences in the wings of various species of birds, so that the difference in wings alone has created many excellent and ordinary "pilots" of Zhiyou. 2. Bird feathers. The outside of the bird's body is light and warm feathers, the feathers not only have the heat preservation for ambush, but also make the bird's appearance streamlined, the least resistance when moving in the air, is conducive to flying, when flying, the two wings continue to fan up and down, the air flow will occur, there will be a huge downward pressure resistance, so that the bird body grinds the servant to fly forward quickly.

3. The bones of birds. The bones of birds are thin and.