Muscle Anatomy and Physiology Flashcard

Front

What is the function of the erector spinae?

Back

Postural support.

Front

Which muscles stabilize the pectoral girdle?

Back

Axial and appendicular muscles.

Front

What happens during flexion?

Back

The angle between bones is decreased.

Front

Which abdominal muscle is not part of the anterior abdominal wall?

Back

Quadratus lumborum.

Front

What fascicle arrangement has fibers running along the long axis of the muscle?

Back

Parallel.

Front

Define 'muscle hypertrophy'.

Back

The increase in muscle size due to exercise.

Front

What is the role of the diaphragm in respiration?

Back

It contracts to increase thoracic cavity volume, aiding inhalation.

Front

What are the primary functions of skeletal muscles?

Back

Movement, posture maintenance, and heat production.

Front

What is the difference between isotonic and isometric contractions?

Back

Isotonic contractions involve movement, while isometric contractions involve tension without movement.

Front

What is the origin of a muscle?

Back

The fixed attachment point of a muscle that does not move during contraction.