Answer:
Parts of human heart and its role and functions are explained below in details.
Explanation:
The heart is a muscular organ about the dimension of a hand, positioned just back and slightly left of the breastbone. The heart elevates blood through the system of veins and arteries called the cardiovascular arrangement.
The heart has four chambers:
- The right atrium receives serum from the veins and elevates it to the right ventricle.
- The left side atrium carries oxygenated blood from the lungs and elevates it to the left ventricle.
- The right ventricle takes blood from the right atrium and elevates it to the lungs, where oxygen is filled.
- The left ventricle elevates oxygen-rich serum to the remainder of the body. The left ventricle strong contractions produce our blood pressure.
Answer:Both of these materials emit numerous volatile organic compounds (VOCs), many of them toxic. In addition to VOCs, the printing process generates nano particles which pose a respiratory hazard. More novel applications involve the printing of biological scaffolds used to generate organs and other structures.
Explanation:
Answer:
Human beings have a base biological need for emotional connection with other people. Throughout human evolution, being a part of a group of people was necessary for survival. Our distant ancestors could not survive alone outside in the harsh elements hunting for food and water and seeking shelter and safety. Humans have survived by being able to connect with other people in a manner which allowed them to remain within a group. Being seen as dangerous, selfish, or unable to connect and contribute to the group meant being ostracized and soon after, death.
Even today, without the dangers our distant ancestors faced, our biological systems are strongly geared toward social engagement. The only priority that trumps social engagement is physical survival. This means that our nervous systems are built to respond quickly and automatically, without any thought, to keep us alive AND in connection with other people. Some level of emotional connection is paramount to our survival and health. Feelings of loneliness, detachment, and isolation are not merely due to individual histories or personalities. They are built-in warning signs that we are missing life-sustaining connection with other people.
Explanation:
<em><u>The HAZOP technique is qualitative, and aims to stimulate the imagination of participants to identify potential hazards and operability problems. Structure and direction are given to the review process by applying standardised guide-word prompts to the review of each node.</u></em>
<em><u>HOPE</u></em><em><u> </u></em><em><u>ITS</u></em><em><u> </u></em><em><u>HELPFUL</u></em><em><u>.</u></em>
Answer:
D. Immune response
Explanation:
An immune response is defined as any reaction that occurs within a host when its body recognizes and defends itself against pathogenic microorganisms (e.g., viruses, bacteria, protists, etc) and/or chemical compounds that look to be foreign and harmful to the body. When the number of detected pathogenic microorganisms increases, the immune system in the host responds by producing cells that attack them or by producing proteins (i.e., antibodies) that destroy the harmful substances. A substance capable of triggering an immune response is known as an antigen (e.g., a structural protein of a pathogenic virus). There are two distinct types of immune responses: 1-innate immune responses, where the body mounts a response immediately without requiring a previous contact with the harmful antigen and does not retain a memory of previous responses; and 2- adaptive immune responses that only occur after exposure to an antigen, these responses are slower but they are specific and produce immunological memory.