Science Group
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Science Group
Answer: Tendons are tough cords of connective tissue that attach muscles to bones.
Answer: Ligaments are elastic connective tissue bands that join bones to bones at joints.
Answer: Adipose tissue stores fat, provides insulation and acts as an energy reserve.
Answer: Areolar tissue is loose connective tissue that fills spaces and binds organs together.
Answer: Blood is a connective tissue whose matrix is the liquid called plasma.
Answer: Skeletal muscle has light and dark bands (striations) and moves under our conscious control.
Answer: Smooth muscle lines the walls of hollow internal organs like the stomach, intestine and blood vessels.
Answer: Cardiac muscle, which pumps blood, is found only in the walls of the heart.
Answer: Cardiac muscle contracts involuntarily and its branched cells are joined by intercalated discs.
Answer: Smooth muscle cells are spindle-shaped, non-striated and each has a single central nucleus.
Answer: Neurons are the specialized cells of nervous tissue that transmit nerve impulses.
Answer: Dendrites receive signals from other neurons and conduct them toward the cell body.
Answer: The axon is a long fibre that carries nerve impulses away from the cell body to other neurons or effectors.
Answer: The myelin sheath insulates the axon and increases the speed at which impulses are conducted.
Answer: A synapse is the small gap between neurons across which the nerve impulse is transmitted.
Answer: Muscular tissue is made of contractile cells that bring about movement of body parts.
Answer: Skeletal muscle fibres are long, cylindrical and multinucleated, and show distinct striations.
Answer: Smooth muscle in the intestinal wall contracts involuntarily to push food along the digestive tract.
Answer: Red blood cells are the most abundant cells in blood, making up the largest proportion of blood cells.
Answer: Mature human red blood cells are biconcave discs without nuclei, which increases their surface area for oxygen transport.