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A comprehensive overview of the muscular and nervous systems, covering their key functions, structures, and processes. It delves into the three general functions of the muscular system, the three types of muscle tissues, the role of troponin and tropomyosin in muscle contraction, the importance of minerals like calcium, and the components of the sarcomere. The document also explores the structure and function of neurons, including the neuromuscular junction, action potentials, and the role of the spinal cord and brain in sensory and motor functions. Additionally, it covers common vision and hearing problems, the mechanisms of taste and smell, and the processing of sensory information in the brain. This wealth of information makes the document a valuable resource for students studying anatomy, physiology, or related fields.
Typology: Assignments
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Name: ___________________________________________________________
Answer the following questions.
______ acetylcholine travels across the synaptic gap
______ actin and myosin form linkages
______ Ca
2+
ions diffuse into fiber; bind to troponin
______ actin and myosin linkages are broken
______ calcium ions diffuse out of the skeletal muscle
______ ACH released from distal end of motor neuron
______ cholinesterase decomposes acetylcholine
______ acetylcholine stimulates the skeletal fiber
______ muscle relaxes
______ muscle fiber shortens (contracts)
state of complete __________________________________________.
while the connective tissue covering of the fascicles is called the ______________________________.
The connective tissue that surrounds each muscle fiber is known as the
a) _____ H band b) _____ A band c) _____ I band d) _____ M line
Complete the following.
Correctly relate the order of contraction events in a muscle fiber by numbering each event below. Place
the number in front of the event.
In the space provided, write the letter of the description that best matches the term or phrase.
_____ 1. Neuron a. the difference in electrical charge across a cell membrane
_____ 2. Dendrite b. part of a neuron that conducts nerve impulses
_____ 3. Axon c. the membrane potential of a neuron at rest
_____ 4. nerve d. nerve cell; transmits information throughout the body
_____ 5. membrane potential e. bundle of neurons
_____ 6. resting potential f. part of a neuron that receives information from other neurons
_____ 7. action potential g. a junction at which a neuron meets another cell
_____ 8. Synapse h. a signal molecule that transmits nerve impulses across synapses
_____ 9. neurotransmitter i. nerve impulse
Answer the following questions.
Write the correct term from the list below in the space next to its definition .
Brain Hypothalamus reflex
brain stem Interneurons sensory neuron
central nervous system motor neuron spinal cord
Cerebellum peripheral nervous system thalamus
Cerebrum
In the space provided, write the letter of the description that best matches the term or phrase.
__________________ 10. carries motor responses from the central nervous system to muscles, glands,
and other organs
__________________ 11. site of capacity for learning, memory, perception, and intellectual function
__________________ 12. consists of the brain and spinal cord
__________________ 13. relays sensory information
__________________ 14. dense cable of nervous tissue that runs through the vertebral column
__________________ 15. contains neurons that branch throughout the body
__________________ 16. carries information from sense organs to the central nervous system
__________________ 17. the body’s main processing center
__________________ 18. regulates breathing, heart rate and endocrine functions
__________________ 19. link neurons to each other
__________________ 20. collection of structures leading down to the spinal cord
__________________ 21. regulates balance, posture, and movement
__________________ 22. a sudden, rapid, and involuntary self-protective motor response
_____ 23. sensory receptor a. the lining of photoreceptors and neurons in the eye
_____ 24. Retina b. aids in hearing
_____ 25. Rod c. type of photoreceptor that responds best to dim light
_____ 26. Cone d. runs from the back of each eye to the brain
_____ 27. optic nerve e. helps maintain equilibrium
_____ 28. Cochlea f. a specialized neuron that detects sensory stimuli
_____ 29. semicircular canal g. type of photoreceptor that enables color vision
Label the correct parts of the brain and spinal cord on the diagram at the left below.
a. cerebellum d. hypothalamus g. spinal cord
b. medulla oblongata e. corpus callosum h. cerebrum
c. thalamus f. pons i. pituitary gland
General Senses
Label the following mechanoreceptors.