Renin enzyme
Renin enzyme are also known as angiotensinogenase and
function by regulating the body means arterial blood pressure. They do circulate
in the blood stream and digest angiotensinogen that was secreted in the liver
into peptide angiotensin 1. Thus, they are secreted by the kidney and placenta.
Type of break is cervical and lumbar curvatures.
If there are no ossification centers, there are no osteoblasts, no osteocytes, no spongy bone, which in turn means no compact bone thus no flat bones which serves as a protection layer.
Osteoclasts are large bone cells with up to 50 nuclei. They remove bone structure by releasing lysosomal enzymes and acids that dissolve the bony matrix. Intramembranous ossification directly converts the mesenchymal tissue to bone and forms the flat bones of the skull, clavicle, and most of the cranial bones. While bone resorption is performed by large immune cells called osteoclasts, osteoblasts, a type of specialized connective tissue-related cells, is responsible for making new bone.
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Answer: homologous structures are inherited from a common ancestor.
Explanation:
According to comparative morphology, homologous structures are inherited from a common ancestor. They also show similar pattern in in their embryological development.
Homologous structures are the similar structures due to shared ancestry. The organism with homologous structures are all the descendants of a common ancestor.
<u>afferent signals</u> flow inward to the central nervous system from sensors in the periphery, while <u>efferent signals</u> flow outward from the central nervous system to the periphery.
Due to technical problems, you will find the complete explanation about the reflex arc in the attached files.
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