An osteocyte is a mature bone cell.?
Indicate whether the statement is true or false
True
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You are lying on the floor with your feet flat and your knees up practicing your abdominal crunches. You raise your upper body to the ceiling, up and down. What muscles are you using to the greatest extent?
A) diaphragm B) rectus abdominus C) pectoralis major D) internal intercostals E) transverse abdominis
Bone is a connective tissue that provides support for the body with its strength and rigidity. Which of the following provides the best explanation for how this is so?
A) Bone cells are very dense and therefore resist physical stress. B) Bones cells secrete an extracellular matrix that when combined with minerals becomes rock hard. C) Bone cells have extensive cytoskeleton that makes them ridged. D) The bone cell's plasma membrane contains a high degree of cholesterol that stabilizes the cell membrane, giving it strength.
A synaptic cleft can be found between _______
A) a neuron and a muscle B) a neuron and a gland C) a neuron and another neuron D) a neuron and another neuron, a neuron and a muscle, as well as a neuron and a gland
Abnormal curvature of the lumbar portion of the spine is called ____
a. lordosis b. scoliosis c. kyphosis d. rickets