Answer:
is one in which blood flows through two capillary beds before being sent back to the heart.
Explanation:
A portal system can be defined as a system of blood vessels having a capillary network at each end, meaning that the blood vessel starts and ends in capillaries, before finding its way back to the heart. The blood draining through the capillary bed flows via the larger vessel to supply the blood to the another structure's capillary bed.
Answer:
A typical atom consists of three subatomic particles: protons, neutrons, and electrons (as seen in the helium atom below). Other particles exist as well, such as alpha and beta particles (which are discussed below). The Bohr model shows the three basic subatomic particles in a simple manner. Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus.
No photo/statement provided. If it deals with photosynthesis, it's a plant. A plant has an organ that makes energy/nutrients for itself using the sun's light and water.
<span>When encountering an unconscious choking victim it is important to perform abdominal thrusts. The answer is letter B. By performing an abdominal thrust, you are applying pressure on the abdomen to force the object out from the system of the choked victim. Victim may be unconscious while choking because the victim lacks oxygen to breathe in from air. To perform abdominal thrust, there are four tips.
1. Stand behind the person by wrapping your arms around his/her waist and make him/her tip forward slightly.
2. Create a fist with one hand and then place it a little bit above his/her navel.
3. Grasp the fist with the other hand by pressing it hard into the abdomen with a sudden ascending thrust.
4. Perform the thrusts five times until the object will be removed form the system of a person.</span>
