answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zimovet
2 months ago
7

In 3-5 sentences, describe the human respiratory system and its functions.

Biology
1 answer:
s2008m [2.3K]2 months ago
5 0

Answer:

The respiratory system is comprised of specialized organs and structures for gas exchange in both animals and plants. The structure and function of this system differ significantly based on the organism's size, habitat, and evolutionary background. In terrestrial animals, the respiratory surfaces are typically the linings of the lungs. In mammals and reptiles, gas exchange occurs within millions of tiny air sacs known as alveoli, while birds have atria for this process. These tiny air sacs boast an extensive blood supply, ensuring air comes into close proximity with the bloodstream. They connect to the outer environment through airways or hollow tubes, with the trachea being the largest that divides in the chest into two primary bronchi. These then branch further into successively narrower secondary and tertiary bronchi, eventually leading to numerous smaller tubes called bronchioles. In birds, these are referred to as parabronchi. The air needs to be drawn into the alveoli or atria from the outside through the act of breathing, which involves respiratory muscles.

Explanation:

You might be interested in
According to the giant impact theory, a giant Mars-sized object collided with Earth. This collision likely resulted in the _____
inysia [2303]
According to the giant impact theory, a substantial Mars-sized object collided with Earth, which likely resulted in Earth's rotation that establishes the duration of a day on our planet.
5 0
1 month ago
Read 2 more answers
4. Many commercial grow lights deliver light mostly in the yellow/red part of the spectrum, along with smaller portions of all o
enyata [2506]

Answer and Explanation:

Such lights can indeed encourage the growth and reproduction of plants.

This occurs because growth, chlorophyll synthesis, flowering, and fruiting are dependent on a specific range of light wavelengths measuring 640-720 nm. While plants naturally absorb this range from sunlight, cultivation lamps that emit this spectrum, corresponding to the yellow/red light, can be used when natural sunlight is insufficient.

6 0
29 days ago
A student is conducting their science experiment on the effect of caffeine on dogs. He has 3 groups of test subjects. The 1st gr
garik1379 [2080]

The independent variable in an experiment is the one that is deliberately modified or adjusted in order to observe its effects.

In this case, the varying amounts of caffeine administered to the dogs are the factor that changes—the control group receives no caffeine, the second group gets 10 mg of caffeine, while the third group gets 50 mg of caffeine each.

Thus, the amount of caffeine given to the dogs is the independent variable being altered.

5 0
2 months ago
The model of exponential population growth predicts that the per capita population growth rate, r Select one:_______.
Tresset [2298]

Exponential Population Growth

Explanation:

The exponential population growth model forecasts that the per capita growth rate, r:

d. remains unchanged as the population enlarges.

A population is said to experience exponential growth when there are no constraints on its increase. All individuals have plentiful resources at their disposal, and the population showcases its inherent rate of growth. This is often termed geometric growth, where the rate of increase is reflected as a constant fraction or exponent applying to the entire population.

5 0
1 month ago
A lab technician provides you with a bacterial pellet labeled "G3". When you observe the pellet under UV light, there is little
enyata [2506]
There are two plausible explanations for the lack of fluorescence observed under UV light: (1) The bacterial DNA within the pellet was not adequately isolated, leading to no fluorescence detection, or (2) After three hours of IPTG induction and G3 labeling, IPTG may not have bound effectively to the bacterial DNA to show any response when exposed to UV.
4 0
1 month ago
Other questions:
  • What would be direct consequences from decreasing angiosperm biodiversity? Select all that apply. extinction of animals balancin
    6·1 answer
  • Some fungi secrete substances that are toxic to bacteria that compete with them for food. Scientists have used their knowledge o
    7·1 answer
  • 3. From problem 2, suppose another boy, Boy C pulls the heavy cabinet with 5 N
    11·1 answer
  • Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Select all the statements that are su
    10·2 answers
  • Having the ability to roll or curl the tongue up along both sides to form a tube is a dominant trait. Which diagram represents t
    9·2 answers
  • Jason avoids drinking milk because he thinks he is lactose intolerant so his diet is ‎inadequate in calcium. How can jason try t
    15·1 answer
  • 1. You are given the task to quantify the bacteria in your soil sample. You do a 10-fold serial dilution of your soil sample in
    7·1 answer
  • The transport problems of a freshwater organism
    11·1 answer
  • What are two ways that a zoo could provide food to an animal<br> that eats plants?
    9·2 answers
  • Which activity would most likely cause a rapid breakdown of glucose molecules? A. A seagull gliding though the air B. A duck res
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!