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Mikyla M. Naces
BSMT – II
MT 30 – F (lab)
CIRCULATORY SYSTEM
1. Artery, vein & nerve c.s – for arteries it is commonly known to carry oxygenated blood away from the heart under a high pressure. Veins on the other hand returns deoxygenated blood to the heart under in a low pressure. Nerves is mainly responsible for transmitting electrical signals that can be used for communication between the human brain and to the other parts of the body.
2. Vein c.s – will show thin walls and valves mainly because this prevents backflow of blood where it will assist in the return of venous blood to the heart and that particular blood is low in oxygen.
3. Vena cave, section – is commonly known as the largest vein in the body which is composed of connective tissues and smooth muscles. The vena cava mainly functions in returning deoxygenated blood from the body back to the human heart specifically in the humans right atrium.
4. Spleen human, c.s – with its internal structure that is composed of red and white pulp, and also sinusoids, it is responsible for filtration, removal of old and damaged red blood cells. It is also responsible in the storage of platelets, and can also produce certain white blood cells that is involved in the immune response of the body.
Mikyla M. Naces
BSMT – II
MT 30 – F (lab)
NERVOUS TISSUE
1. Cerebellum H&E, section – with its neuronal structure present in the stained sample, it contains layers of neurons called the Purkinjie cells and granule cells. Its primary function is to coordinate and produce voluntary movements in order to maintain posture and motor learnings.
2. Frog spinal cord – it is the main way in the body that is responsible for sensory signals as well as motor signals of the brain and the rest of the whole body. it is the one that is responsible in the reflex actions and to some locomotion movement in the body.
3. Human spinal cord – is the very important or vital part of the human body because it relays sensory information from the peripheral nervous system to the brain and transmit motor signals from the human brain to the human body. It is the one making the automatic functions such as heart rate, breathing possible.
4. Spinal cord (mammal) c.s – contains cell bodies and a clear white matter made up off myelinated axons. Primarily, it is to relay information like any other spinal cord that enables voluntary movement, perception in the sensory and reflex response.
Mikyla M. Naces
BSMT – II
MT 30 – F (lab)
MUSCLE TISSUE
Mammal striated muscle- is responsible mainly of voluntary movement and is usually found attaching to the bones in the body. It moves in contraction in coordination in order for the body to move in walking, lifting and running.
Striated Muscle, c.s – the cross-section sample will show you the muscles characteristic striations where you will most likely see bands of dark and light. These bands is a demonstration of the organized fibers in the muscle and are formed in the name of fascicles and is capable for force generation while movement and stability.
Striated muscle, l.s – as longitudinal sample shows, there is a presence of elongated fibers that are aligned in direction of the force transmission. This formation is capable of the efficient transmission of muscle contraction that maintains posture and movement.
Striated Muscle – in general, it is also called as the skeletal muscle and is responsible for body movement and posture as well as facial expressions. It is made up of multi nucleated fibers that contract as stimulated by nerve impulses where it generates force to move.
Mikyla M. Naces
BSMT – II
MT 30 – F (lab)
CONNECTIVE TISSUES
Fibrocartilage section- for areas like interverbal discs in the spine and the pubic symphasis, it provides a support to the structure and shock absorptions. It gives a helping hand in order to withstand the tension and compression forces.
Bone Marrow – is commonly known as the one responsible for producing red blood cells, white blood cells and platelets. These very important produced things plays big role in transportation of oxygen and immune responses and stops blood clotting.
Yellow elastic tissue- is responsible for resilience and recoils to organs especially the lungs, skin and arteries. It is the one responsible to the ability of these organs to stretch and form back again to their original shape.
Elastic cartilage- as much as it allows for certain organs to stretch, it is also the one responsible in maintaining the structure of organs with it being flexible. It can be found in the external ear, larynx and epiglottis.
Mikyla M. Naces
BSMT – II
MT 30 – F (lab)
EPITHELIAL TISSUES
Human Squamous epithelium- forms a protective barrier that will protect the body from any abrasion and also pathogens. It can found in the outer layer of the skin or epidermis, and it can also be found on the lining of the blood vessel as well as in the lungs particularly the air sac.
Simple Cuboidal epithelium- is the one responsible in facilitation the secretion and absorption most especially in the glands and the tubules of kidney. It can be found lining the ducts as well as covering the ovaries.
Cuboidal Epithelium section- as it is section it will show a cube cell shaped which often found on kidney tubules and also in thyroid glands. Just like other epithelial tissues, it is responsible for the secretion and absorption.
Frog Simple Squamous epithelium- serves as a lining to the organs of the species such as their lungs. It is responsible in facilitating the exchange of gas and aids the filtration in the kidney glomeruli.