This allows the adrenal glands, for example, to send messages that cause our whole body to prepare for fight or flight. The neurotransmitters are then packaged in vesicles and transported to the axon terminal. Explanation: The cell body or soma contains the nucleus of the neuron, as well as other organelles. It is made up of the gastrointestinal tract which includes the esophagus, stomach, liver, and intestines along with accessory organs of digestion. The male reproductive system includes the penis and the testes, which produce sperm.
In addition to producing urine, your kidneys are intimately involved in maintaining the fluid and mineral balance in your bloodstream. In particular, the heart is comprised of the as the main tissue component and other tissues such as , , and. Spinal cord C is correct. Regardless of how you separate the different organ systems within the human body, as you study these systems, keep in mind that an organ or structure that is included in one system may also be included in another. They are present in many types of animals. Though flagella can be found in certain human cells and somewhat resembles the long, narrow structure of an axon, the two are functionally very different.
To ensure that we get enough oxygen, the heart even pumps blood through a special circuit to send large amounts of blood through the lungs quickly. For instance, the function of the digestive system—taking in food, breaking it down into molecules small enough to be absorbed, absorbing it, and eliminating undigested waste products—depends on each successive organ doing its individual job. Most organs contain all four tissue types. It includes the skin, hair, and nails. We are thankful for those that contribute different languages. But it's not under voluntary control, so—thankfully! One of the most important purposes of food is to serve as cellular fuel; carbohydrates, proteins, and fats can all be used by our cells to as sources of the energy they need to stay alive. Groups of organ systems work together to make complete, functional organisms, like us! The brain and spinal cord are key components for organizing and interpreting these signals.
The major male structures include the testes, scrotum, penis, vas deferens, and prostate. There are 11 major organ systems in the human body, which include the circulatory, respiratory, digestive, excretory, nervous and endocrine systems. The structure of the heart reflects its job of pumping blood throughout the body, while the structure of the lungs maximizes the efficiency with which they can take up oxygen and release carbon dioxide. Pinky's teacher certification is in grades 4-8 science and 8-12 composite science encompassing biology, chemistry, and physics. The circulatory and respiratory system work together to bring oxygen and nutrients to the cells. Cardiac muscle tissue also has intercalated discs, specialized regions running along the plasma membrane that join adjacent cardiac muscle cells and assist in passing an electrical impulse from cell to cell.
Of course, the human life expectancy of ~85 years is nothing in evolutionary terms. It is made up of bones and cartilage. The respiratory system brings oxygen into your body and eliminates carbon dioxide. Or perhaps we should say, the largest organ on the body. Although we learn about each organ system as a distinct entity, the functions of the body's organ systems overlap considerably, and your body could not function without the cooperation of all of its organ systems. The fibers are bound together by connective tissue that is made up of blood vessels and nerves.
Smooth muscle is not striped, striated, and it's involuntary, not under conscious control. Urination A B C D Half-n-half Clue 4. Another example is the respiratory system, which brings oxygen into the body and gets rid of carbon dioxide. As shown in the diagram below, it starts at the mouth, where we ingest our food and use our saliva, teeth and tongue to bite and mash it. Organs that are functionally related comprise the so-called.
This system is different for males and females. The kidney and bladder work together to filter blood in the excretory system. While the nervous system uses electrical and chemical systems to control bodily functions, the endocrine system performs a similar function, but through long-distance chemical messages. Cartilage is more flexible and supports those parts of our bodies that are not as rigid, such as the nose, ears and some elements of the ribcage. All of these A B C D Half-n-half Clue 5.
The cells in complex multicellular organisms like people are organized into tissues, groups of similar cells that work together on a specific task. Using easy-to-understand descriptions and illustrations, we'll explore the circulatory, respiratory and digestive, systems, among other types, after which you'll have the chance to take a brief quiz and see how well you understood the material. It includes the brain, spinal cord, and a large network of nerves. For example, the gonads of both males and females belong to the reproductive system as well as the endocrine system. Humans have three types of muscles: heart muscle, smooth muscle, and skeletal muscles. Includes lymphatic vessels which permeate the body.