Limbs-Especially Jointed Limbs-Are an Important Evolutionary Development Because They Allow

question 29

Multiple Choice

Limbs-especially jointed limbs-are an important evolutionary development because they allow animals to

• A) undergo complete metamorphosis.
• B) have young disperse from sessile adults.
• C) develop an endoskeleton.
• D) move quickly and precisely.
• E) inhabit aquatic environments.

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Definitions:

Glycogen Stores

Accumulations of glycogen within the liver and muscles, serving as a form of energy storage for the body.

Sarcoplasmic Reticulum

A network of membrane-enclosed tubules in muscle cells that stores and releases calcium ions, critical for muscle contraction.

Transverse Tubules

These are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells, facilitating the uniform contraction of the muscle.

Sarcolemma

The thin, plasma membrane that envelopes a muscle cell (fiber), playing a critical role in muscle contraction.