QUESTIONS AND ANSWERS VERIFIED
COMPLETE SOLUTION STUDY GUIDE
GRADED A PLUS
⩥ three types of neurons.
Answer: 1. interneurons= singles from one neuron to another
2. motor neurons= spinal cord or brain to other parts of the body
3. sensory neurons= body to spinal cord or brain
⩥ CNS: four major sections of the brain.
Answer: 1. cerebrum= largest part of the brain (80%), left and right
hemispheres
2. diencephalons= center part of the brain
3. cerebellum= rear part of the brain
4. brain stem= connects the cerebrum and cerebellum to the spinal cord
⩥ PNS.
Answer: 1. voluntary nervous system (somatic)= signals skeletal
muscles to contract voluntary movements
2.involuntary nervous system (autonomic)= relates the contraction of
internal organs, heart rate, digestion, and breathing
,⩥ How many bones are there.
Answer: -major function= to provide form and shape to the body
-axial skeleton= skull, rib cage, vertebral column
-appendicular skeleton= upper and lower extremities
-206 bones, 177 voluntary movement
-synovial joints= 80% of joints in body
⩥ three types of muscle tissue.
Answer: 1. cardiac= walls of the heart
2. smooth= composes the epithelial of other hollow organs
3. skeletal= attached to skeleton, voluntary
⩥ three muscle actions when lifting.
Answer: 1. concentric= muscle fibers are shortened, contractions
2. ecentric= muscles lengthen
3. isometric= tension on the muscle
⩥ three types of muscle pain after workout.
Answer: 1. Soreness / burning = lactic acid
2. muscle and joint soreness= few hours after workout
3. delayed-onset muscle soreness (DOMS)= lasts for a few days
,⩥ cardiorespiratory system jobs.
Answer: - transports oxygenated and deoxygenated blood
- maintains homeostasis
- distributes nutrients, hormones and enzymes
- removes waste
- regulates PH
- maintains fluid volume and body temp
⩥ cardiovascular system three compounds.
Answer: 1. heart
2. blood vessels carrying blood between heart and tissue
3. blood
⩥ respiratory sytem (pulmonary system).
Answer: -made up of soft tissue and skeletal structures
-major function= all cells function properly
⩥ three energy systems.
Answer: 1. immediate energy (ATP-CP system)
- 10 secs or less
2. short term energy (lactic acid or glycolytic system)
, - about 1 minute
3. long term energy (aerobic or oxidative system)
- 2+ minutes
⩥ biomechanics.
Answer: -use of engineering principles and applying them to biological
organisms (mechanics of tissues, joints, and human movement)
⩥ biomechanics and exercise: anatomy.
Answer: 1. muscles composed of millions of fibers
2. these fibers are wrapped by fascia, or connective tissue, called
endomysium
3. endomysium forms bundles that are surrounded by another layer of
tissue called the perimysium
4. perimysium covered by a fibrous facial layer called the epimysium
5. epimysium extends from the tendons that connect the bones to
muscles
⩥ five biomechanics benefits of warm-up.
Answer: 1. cardiorespiratory enhancements
2. prevents premature fatigue during workouts
3. heighten body temp
4. enhances motor skills and brain transitions for continuos activity