Muscle Structure Flashcard

Front

What is the primary function of the capillaries in muscle tissue?

Back

To supply oxygen and nutrients.

Front

What is the role of nuclei in muscle cells?

Back

Control cell activities.

Front

Which structure is labeled as the 'I band' in a sarcomere?

Back

Area with only actin filaments.

Front

What is the smallest unit in the muscle hierarchy?

Back

Myofilaments.

Front

What are synaptic vesicles?

Back

Where neurotransmitters are stored.

Front

What are myofibrils?

Back

Long, thread-like structures in muscle cells that contain sarcomeres.

Front

What is the function of myosin in muscle contraction?

Back

Myosin is a motor protein that interacts with actin to produce muscle contraction.

Front

What is the role of actin in muscle cells?

Back

Actin filaments provide the structural framework for muscle contraction.

Front

What is a sarcomere?

Back

The basic contractile unit of muscle tissue.

Front

What is the function of the sarcoplasmic reticulum?

Back

Stores calcium ions necessary for muscle contraction.