________ are embedded in a hard matrix that is composed of calcium and phosphorus compounds.
Bone cells
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2
________ contain very little matrix and connect bones with bones.
Ligaments
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________ are also used for transpiration, which is the loss of water in the form of water vapour from the aerial parts of the plant.
Stomata
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permanent tissue
The flexibility in plants is due to another ________, collenchyma.
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Cells
________ in cartilage, another form of connective tissue, are widely spaced.
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It is the ________ which makes the plant hard and stiff.
tissue
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cyclic contraction
Throughout life, the heart's muscles show ________ and relaxation.
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internal organs
Under the epidermis and in between ________, there is adipose tissue that stores fat.
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9
A(n) ________ is made up of a cell body, which has a nucleus and cytoplasm, and long, thin portions that resemble hairs.
neuron
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10
The plasma contains ________, salts and hormones.
proteins
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11
________ connect muscles to bones and are another type of connective tissue.
Tendons
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________ are unique proteins found in muscles that contract and relax to produce movement.
Contractile proteins
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13
The ________, spinal cord and nerves are all composed of the nervous tissue.
brain
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________ is found in the skin, blood vessels, kidney tubules, lung alveoli, and the lining of the mouth.
Epithelial tissue
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15
________ are cells having tubular walls that are perforated.
Sieve tubes
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________ is the most common simple permanent tissue.
Parenchyma
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17
________ can be found in the bone marrow, around blood vessels and nerves, and between the skin and muscles.
Areolar connective tissue
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18
________ also transmit signals.
Nerve cells
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19
________ is also a component of the body's protective skin.
Squamous epithelium
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sclerenchymatous tissue
It is made of ________.
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individual nerve cell
A(n) ________ may be up to a metre long.
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________ are fibrous tissue with great strength but limited flexibility.
Tendons
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Intercalary meristem
It seen in some plants is located near the node.The intercalary meristem's job is to promote the lengthening of the stem and the growth of the plant's height
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