Answer:
<u>Mesenchymal Cells</u> : Mesenchyme in vertebrate is a type of connective tissues found mostly during embryo development.It comprises of ground substance with few cells or fibres.Its is also referred to a group of mucoproteins which are found in different types of cysts resembling like that of mucus. Mesenchymal cells are productive stromal cells that can be divided into different varieties of cells like osteoblasts, chondrocytes, myocytes and adipocytes. These are the adult stem cells which are found in the bone marrow.However these cells can be extracted from other tissues including peripheral blood, fetal liver, lung fallopian tube and cord blood. These are found in bone marrow significant for renovation of skeletal tissues such as cartilage, bone & fat found in bone marrow.
<u>Osteogenic Cells :</u> They are the only bone cells which differentiate. They differentiate & forms into osteoblasts which are responsible for new bones formation. They are located deeper into the periosteum and bone marrow.
<u>Osteoblasts</u> : Osteoblasts work in sets known as osteons to make the osteoid matrix and they release it at regulated times to develop the new bone tissue where it is mostly required. Osteoblasts formation & activity enlarges in contrast to growth factors & physical activities so that stronger bones can be formed. They are found in large numbers in periosteum and in endosteum. Normally all of the bone matrix in air breathing vertebrates is mineralized by osteoblasts.
<u>Lacunae</u> : Lacunae are the small spaces between the lamellae where osteocytes are located.They are linked together by minute networks called canaliculi. These networks provide a pathway through which a nutritives reach osteocytes and so the waste products leave them.
<u>Osteocytes</u> : Osteocytes are the cells which lies within the substance of fully developed bone . It occupies a small compartment called lacunae which is located in the calcified matrix of bone. They are mature osteoblasts which are surrounded by the products they secreted. Osteocytes continue to develop bone to some extent which is significant for the maintenance of the strength and health of bone matrix. However they still perform the functions which are beyond maintenance.
<u>Osteoclasts</u> : These are large cells with multiple nucleus which are evolved from another types of cells called macrophage. These are the large cells which dissolve the bone. They are derived from bone marrow and are related to white blood cells. They are found on the bone mineral's surface next to the dissolving bone.
Answer:
Simple cell
Explanation:
Simple cells are found in primary visual cortex and are made up of large number of receptive fields from neurons and the respond to light at specific Orientation and oriented edges. The cells were discovered by Torsten Wiesel and David Hubel in the late 1950s. The simple cells respond to stimuli with some particular orientations to objects within their receptive fields. Receptive fields comprises of sensory receptors in the sensory neurons that draw out neurosonal responses when there are stimulated
Answer: adenine (A), uracil (U), guanine (G), and cytosine (C). When this base-pairing happens, RNA uses uracil (yellow) instead of thymine to pair with adenine (green) in the DNA template below.Bases. ... The four bases that make up this code are adenine (A), thymine (T), guanine (G) and cytosine (C). Bases pair off together in a double helix structure, these pairs being A and T, and C and G. RNA doesn't contain thymine bases, replacing them with uracil bases (U), which pair to adenine1.
Explanation:
Answer:
Propagación vegetativa
Explanation:
La propagación vegetativa es un tipo de reproducción asexual vegetal a partir de células, tejidos u órganos (por ejemplo, hojas, tallos y raíces) capaces de dar origen a organismos genéticamente idénticos mediante mitosis. Este mecanismo ha sido explotado en mejoramiento genético y en agronomía a fin de reproducir plantas con características fenotípicas deseadas a partir de un número reducido de células somáticas. Las regiones de la planta capaces de dar origen a un nuevo organismos se conocen como propágulos, los cuales pueden ser rizomas (a partir de raíces), tubérculos (tallos), estolones (brote laterales), etc. Diferentes tipos de suculentas tales como, por ejemplo, <em>Sedum morganianum</em>, Sedum<em> rubrotinctum</em>, <em>Kalanchoe daigremontiana</em> y <em>Graptosedum</em> o “California Sunset” se reproducen vegetativamente mediante propágulos foliares.
