25. The combination of alternating dark A bands and light _______________ bands gives a muscle fiber its striated appearance 27. neurotransmitters are stored in ______________, which are located within synaptic end bulbs 30. cardiac muscle tissue has a long _____________ that allows time for the chambers of the heart to relax and fill with blood between beats 31. smooth muscle tissue contains thick filaments, thin filaments, and ____________ filaments 34. the minimum stimulus required for skeletal muscle contraction is called a ____________ stimulus
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
please fill in the blanks:
25. The combination of alternating dark A bands and light _______________ bands gives a muscle fiber its striated appearance
27. neurotransmitters are stored in ______________, which are located within synaptic end bulbs
30. cardiac muscle tissue has a long _____________ that allows time for the chambers of the heart to relax and fill with blood between beats
31. smooth muscle tissue contains thick filaments, thin filaments, and ____________ filaments
34. the minimum stimulus required for skeletal muscle contraction is called a ____________ stimulus
Step by step
Solved in 2 steps
