The products of the digestive system are actually tied directly to the circulatory system in that the organs of the digestive system are used to turn ingested food into products that can be absorbed by the blood and then carried to other organs for use as energy or other functions.There are also several links between the digestive system and the respiratory system in that there are organs and muscles that serve both, for example the diaphragm which works to force air into and out of the lungs as well as to force waste products out of the digestive system.<span>All of the systems have to work together as well, without the intake of oxygen and exhalation of carbon dioxide, the function of the digestive system would grind to a halt. Without the production of glycogen and other things necessary for muscular function, produced by the digestive system and then distributed by the circulatory system, all three functions would cease.</span>
Answer:
1. How did the infant look when you found he or she/him or her?
2. Was the infants' head buried in a blanket?
3. Did you hear the infant cry out?
4. Were any of the siblings, jealous of the new baby?
Mechanical stress applied to bone increases osteoblast activity in bone tissue, and the removal of mechanical stress decreases osteoblast activity.
Explanation:
Osteoblasts are cells , that are produced in the bone marrow and are responsible for formation of bones and bone matrix.
Whenever a mechanical stress is applied on the bones , a series of reactions are triggered. As a result the activities of osteoblast increases to synthesize more and more bone matrix to provide strength.
Again on the other hand a decrease in mechanical causes a decrease in the activities of the osteoblasts.
<h2>Primates </h2>
Explanation:
Primates are a group of animals has flexible hands and feet, large brains in relation to body size, forward-looking eyes, and arms that can rotate in a circle around the shoulder joint
- Primates include the lemurs,lorises,monkeys,apes and humans
- The order Primates, with its 300 or more species, is the third most diverse order of mammals, after rodents and bats
- The Primates order is divided informally into three main groups: prosimians, monkeys of the New World, and monkeys and apes of the Old World
- All primates have five fingers (pentadactyly), a generalized dental pattern, and a primitive body plan
- Another distinguishing feature of primates is fingernails
- Opposing thumbs are also a characteristic primate feature
- When compared with body weight, the primate brain is larger than that of other terrestrial mammals, and it has a fissure unique to primates that separates the first and second visual areas on each side of the brain
- The eyes face forward in all primates so that the eyes visual fields overlap
- Fossils of the earliest primates date to the Early Eocene Epoch (56 million to 40 million years ago) or perhaps to the Late Paleocene Epoch (59 million to 56 million years ago)
