The Arenal Volcano in Costa Rica
Answer:
b) convolutions
Explanation:
The part that makes the outer rim of the cerebrum is the cerebral cortex. It is composed of gray matter. The billions of neurons of the cerebral cortex are organized in distinct layers. During embryonic development, enlargement of the brain is accompanied by even more enlargement in the gray matter of the cerebral cortex. However, it fits into the skull due to its folds which are also called convolutions or gyri. The cortical region rolls and folds on itself.
Question: Which of the following allows groups of skeletal muscle cells to perform coordinated contractions?
Answer: Their sarcolemma is fused to the tendons, allowing them to function without continual nerve stimulation.
Explanation: basically skeletal muscles maintain posture, stabilize bones and joints
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