1answer.
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
a_sh-v [17]
3 years ago
13

1. The primary function of the _________________ is to supply the blood with oxygen so that the blood can deliver oxygen to all

parts of the body. (1 point)
Digestive system
Cardiac system
Respiratory system
Endocrine system
2. The ___________ is a strong wall of muscle that contracts to create a suction in the chest to draw in air and expand the lungs. When the muscle relaxes, the chest cavity decreases and the air is pushed out. (1 point)
Biology
2 answers:
drek231 [11]3 years ago
7 0
The primary function of the respiratory system is to supply blood with oxygen
geniusboy [140]3 years ago
5 0

Respiratory system

Diaphragm

The principal glands of the respiratory system are lungs, which transport out the interchange of gases as we exhale. Red blood cells accumulate the oxygen from the lungs and transport it to the portions of the body wherever it is required.

The diaphragm is a tiny skeletal tissue that lies at the base of the chest and divides the stomach from the thorax. It compresses and crushes when you inhale. This generates a vacuum impact that stretches air into the lungs. When you breathe, the diaphragm decreases and the oxygen is forced out of lungs.

You might be interested in
People infected with the human immunodeficiency virus (HIV) have an increased risk of dying from secondary infections. Which of
nikdorinn [45]

Answer:

HIV destroys helper T cells

Explanation:

The evading viruses destroys helper T cells or the CD4+ thus the body can no longer stop some infections. The secondary infections also called opportunistic infections are rampant with people who have AIDS. This is because helper T cells help fight against most infections in the body.

8 0
3 years ago
Fossil fuels are fuels such as coal, oil, and natural gas. They are formed over millions of years from the remains of ancient pl
Rama09 [41]

Answer:

Fossil fuels produce energy when used

Explanation:

when something combusts or is used it produces energt

5 0
3 years ago
Read 2 more answers
Land biomes are separate into major groups
Setler [38]
Trueeeeeeeeeeeeeeeeeeeee
5 0
3 years ago
Why would a third-degree burn be less painful than a first- or second-degree burn involving the same body area?
Irina18 [472]
A third-degree burn would be less painful than a first- or second-degree burn involving the same body area because of the destruction of underlying pain receptors.
Nerve endings are destroyed in third-degree burns, which means that a person can no longer feel pain in that particular spot on the body. Third-degree burns are the most severe ones and cannot be treated easily - usually skin grafting or synthetic skin has to be used to replace the burnt skin.
6 0
3 years ago
What is the most important factor in explaining why osmosis occurs spontaneously?
Burka [1]
Because in episode 6 of twilight Bella needed Edward and he left her in the woods
4 0
1 year ago
Other questions:
  • Describe how to reduce the risk of harm from one hazard when using Benedicts solution?
    14·1 answer
  • Substances in food or supplements that destroy free radicals and slow their formation are
    9·1 answer
  • In humans, which set of sex chromosomes do females have?
    13·1 answer
  • What term is used to describe a species whose population is rapidly decreasing and may disappear completely?
    5·2 answers
  • Which gas is responsible for global warming and Which gas is responsible for ozone layer depletion?
    11·1 answer
  • Imagine that you adapted to a motion stimulus with one eye and then switched to the other eye and did not experience a motion af
    8·1 answer
  • List three examples of matter that are cycled through ecosystems.
    11·2 answers
  • Which color of light is best for photosynthesis? (Hypothesis!)
    12·1 answer
  • List the inputs and
    10·1 answer
  • Help!!!<br> What are the tools and technology used to carry out PCR tests ????
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!