Activity Flashcards
Exam 3
Role of Skeletal System in Movement
- Supports the soft tissues of the body
- Protects crucial components of the body
- Furnishes surfaces for the attachment of muscles, tendons, and ligaments
- Provides storage areas for minerals and fat
- Produces blood cells
Freely movable joints include:
- Ball and socket
- Condyloid
- Gliding
- Hinge
- Pivot
- Saddle
How are bones classified by shape?
- Long bone
- Short bone
- Flat bone
- Irregular bone
Long bones
upper and lower extremities
Short bones
wrist and ankle
Flat bones:
ribs and skull bones
Irregular bones:
spinal column and jaw
Joint movements include:
Abduction
Adduction
Circumduction
Flexion
Extension
Hyperextension
Dorsiflexion
Plantar flexion
More joint movements:
Rotation
Internal rotation
External rotation
Supination
Pronation
Inversion
Eversion
Three Types of Muscles
- Skeletal
- Cardiac
- Smooth or visceral
Important functions of muscles
- Motion
- Maintenance of posture
- Support
- Heat production
Effect of Nervous System on Muscle Contraction: What do neurons do?
Neurons conduct impulses from one part of the body to another
Effect of Nervous System on Muscle Contraction: What do afferent nervous system do?
The afferent nervous system conveys information from receptors in the periphery to the CNS
Information is processed by the CNS leading to a response
Effect of Nervous System on Muscle Contraction: What does the efferent neurons do?
Information is processed by the CNS leading to a response
The efferent neurons convey the response from the CNS to skeletal muscles by way of the somatic nervous system
Postural Reflexes
Labyrinthine sense
Proprioceptor or kinesthetic sense
Visual or optic reflexes
Extensor or stretch reflexes
Ergonomics:
Practice of designing equipment and work tasks to confirm to the capability of the worker