Muscular System Overview
What is the primary function of the muscular system?
What is movement and stability?
What property allows muscle cells to respond to stimuli?
What is excitability?
What type of muscle contraction moves food through the GI tract?
What is peristalsis?
What is the shape of fusiform muscles?
What is thick in the middle and tapered at both ends?
What is the site where a motor neuron meets a muscle fiber called?
What is the neuromuscular junction (NMJ)?
Name the three types of muscle tissue.
What are skeletal muscle, cardiac muscle, and smooth muscle?
What is the term for muscle growth due to increased cell size?
What is hypertrophy?
Which muscles control the passage of substances through body openings?
What are circular muscles?
Which muscle shape has fascicles that spread like a fan?
What is convergent muscle?
What is the role of neurotransmitters at the NMJ?
What is to excite the muscle fiber to contract?
What role do muscles play in temperature homeostasis?
What is heat production through cellular respiration?
What happens to muscle cells during atrophy?
What is a decrease in size due to loss of intracellular protein?
How do muscles protect internal organs?
What is by covering them with muscle instead of bone?
What is an example of a parallel muscle?
What is the rectus abdominis?
What is a motor unit?
What is a single motor neuron and all the muscle fibers it innervates?
How do muscles contribute to communication?
What is through facial expressions, body language, and speech?
What is the functional unit of contraction in muscle fibers?
What is the role of muscles in the reproductive system?
What is to assist in the propagation of offspring through muscular actions?
Which muscle shape acts as sphincters?
What are circular muscles?
What phenomenon occurs when a neuron fires an action potential?
What is all myofibers in the motor unit respond?
Describe the relationship between the muscular system and the skeletal system.
What is muscle contractions pull on bones, affecting bone health and calcium homeostasis?
How do skeletal muscle fibers differ from cardiac muscle fibers in terms of nuclei?
What is skeletal muscle fibers are multinucleated, while cardiac muscle fibers typically have one or two nuclei?
How do muscles contribute to the respiratory system?
What is by facilitating ventilation through diaphragm and intercostal muscle movements?
What is a characteristic of pennate muscles?
What is they have feather-like fascicles that insert obliquely on a tendon?
How does the nervous system control force development in muscles?
What is by recruiting more or fewer motor units?