Ex Phys Chapter 5 test

Human movement is accomplished through the functional integration of three systems within the human body: the nervous system, the skeletal system, and what other system?

• Digestive

• Muscular

• Vascular

• Coronary

What is the concept that describes the human body as a chain of interdependent links that work together to perform movement?

• Kinetic chain

• Golgi Tendon Organ

• Nervous system

• Proprioception

Calcium is often associated with bone health, but why is it also important for muscular function?

• It helps transmit the motor signal.

• It converts ADP back to ATP.

• It stimulates actin and myosin activity.

• It helps the nerve impulse cross from the synapse into the muscle.

What best describes the all-or-nothing principle?

• All muscle fibers contract, or none at all do.

• The switch from type I to type Il muscle fibers

• The switch from type Ila to type lix muscle fibers

• A motor unit will either contract maximally or not at all.

What is the name of the specialized cell that is the functional unit of the nervous system?

• Nucleus

• Neuron

• Axon

• Spindles

Which type of muscle fiber has a large number of capillaries?

• Type lla

• Type l

• Type lll

• Type llx

Which part of a cell is responsible for using nutrients to create energy for the cell?

• Organelles

• Effector sites

• Mitochondria

• Electrolytes

One of the two interdependent divisions of the nervous system is the central nervous system. What is the second division?

• Autonomic nervous system

• Somatic nervous system

• Peripheral nervous system

• Sympathetic nervous system

What are the two components of the central nervous system?

• The brain and spinal cord

• The nerves and sensory receptors

• The somatic and autonomic nervous systems

• The sympathetic and parasympathetic nervous systems

What is the primary purpose of the peripheral nervous system?

• To coordinate the activity of all parts of the body

• To transmit impulses between afferent and efferent neurons

• To transmit nervous impulses from neuron to neuron

• To connect the central nervous system to the rest of the body