PATHfit Reviewer Flashcards
Study of the structure and function of muscles in the human body.
Muscle Anatomy
Key components of muscles
Muscle Fibers
Fascia
Tendons
Basic building blocks of muscles.
Muscle Fibers
Long cylindrical cells that contains specialized proteins that contract and relax to produce movement
Myofibrils
Refers to the connective tissue that surrounds and separate muscles and other internal structures.
Fascia
Are strong fibrous connective tissue that connect muscles to bones. They transfer the force generated by muscle contraction to produce movement.
Tendons
Types of muscles
Cardiac muscles
Skeletal muscles
Smooth muscles
Only found in the heart. They are responsible for the contraction and popping of the heart. Helping to circulate blood throughout the body.
Cardiac muscles
Attached to the bones and help the body move. They are under voluntary control and are the most common type of muscles in the human body.
Skeletal muscles
Found in the walls of internal organs such as the stomach intestines and blood vessels. They move involuntary and control various internal processes.
Smooth muscles
Functions of muscles
Movement
Stability and posture
Heat production
Protection
Contracting and relaxing and response to nerve signals. This allow for locomotion, maintaining posture, in carrying out voluntary activities.
Movement
Muscles provides the ability and support to the skeletal system, allowing individuals to maintain balance and posture.
Stability and posture
Muscle contractions generate heat, contributing to body temperature.
Heat production
Muscle protect vital organs, such as the heart and lungs, by forming layers of muscles tissues around them.
Protection
The nervous system signals the muscles to contract, and calcium is released to trigger actin myosin interaction
Contraction process
After the nervous signal ceases, the calcium is reabsorbed, in the muscle fibers return to this original state.
Relaxation process
Common muscle injuries
Sprain
Strain
Muscle tears
Can occur due to over exertion improper use of muscles or insufficient warm up
Muscle tears
Prevention tips
Proper warm up
Maintain good posture
Regular stretching
How many muscles in the human body
About 600 muscles
The largest muscles in the body
Gluteus maximus
Strongest muscles in the body
Masseter
A muscle within the ear. The smallest muscle in the body
Stapedius
The weakest muscle in the body
Stapedius
A partial or complete break in the bone
Fracture
A separation of two bones where they meet at a joint
Dislocation
An injury to the ligament around a joint
Sprain
When a muscle or tendon is stretched too far
Strain
Muscle to bone
Tendon
Muscle to muscle
Ligaments
How muscle moves
Cerebral cortex
Spinal nerves
Muscle innervation
A structure deep in your brain, acts as body smart control coordinating center
Hypothalamus
Various actions or motions that can be performed by the body’s joints and muscles
Anatomical movement
Bending movement that decreases the angle between two body parts. Occurs in sagittal plane
Flexion
Straightening or increasing the angle between two body parts. Occurs in sagittal plane
Extension
Bending or tilting a body sideways. Occurs in frontal plane
Lateral flexion
Takes a body part away from the midline of the body. Occurs in frontal plane
Abduction
Brings a body part closer to the midline of the body. Occurs in frontal plane
Adduction
Movement of a body part around its own axis
Rotation
Rotating a body part towards the midline of the body or its axis. Occurs in transverse plane
Internal rotation
Rotating a body part away from the midline of the body or its axis. Occurs in transverse plane
External rotation
Complex movement that combines flexion extension abduction and adduction. Moving a body part in a circular motion
Circumduction
Movement of the forearm where the palm faces upward or anteriorly
Supination
Rotation of the forearm where the palm faces downwards or posteriorly
Pronation
Lowering or moving a body part inferiorly or downward. Occurs in frontal plane
Depression
Racing or lifting a body parts superiorly or vertically. Occurs in frontal
Elevation
Extending a joint beyond its normal range of motion in the direction opposite of flexion.
Hyperextension
Used to orient the position of a body part in relation to the rest of the body
Anatomical direction
Above or towards the head
Superior
Below or towards the feet
Inferior
Closer to an attached area or trunk
Proximal
Further from an attached area or trunk
Distal
Towards the midline
Medial
Away from the midline
Lateral
Front of the body
Anterior
Back of the body
Posterior
Anatomical planes
Frontal plane
Sagittal plane
Transverse plane
Divides front from back
Frontal plane
Divides left from right
Sagittal plane
Divide horizontally creating inferior and superior sections
Transverse plane
Movement of the pad of the thumb to touch another finger
Opposition
Reversal of opposition
Reposition
Pushing or pointing the toes and the ball of the foot down towards the ground
Plantar flexion
Standing on the hill of the foot toes are pointing up toward the sky
Dorsiflexion
Moving the photo turn the sole inwards
Inversion
Moving the foot to turn the sole outward
Eversion
Moving a body part forward
Protraction
Moving a body part backward
Retraction
Capacity of the body to do activities without exhaustion
Physical fitness
Basic components of fitness
Health related fitness components
Skill related fitness components
Health related fitness component
Cardiovascular endurance
Muscular strength
Muscular endurance
Flexibility
Body composition
Skills related fitness
Speed
Power
Reaction time
Coordination
Balance
Agility
Total capacity of the heart and lungs to do lengthy activities without getting tired
Cardiovascular endurance
Ability of muscles to overcome the resistance
Muscular strength
Capacity of joints to stretch maximum
Flexibility
Muscles ability to do lengthy activities
Muscular endurance
Percentage of fat water and muscles in the human body
Body composition
Ability to move as fast as possible
Speed
Ability to use muscular strength quickly
Power
The time elapsed between stimuli and response. reaction is the ability to react quickly to a stimuli
Reaction time
The ability to make movements work together
Coordination
Ability to control the body in standing moving and performing position
Balance
Ability of the body to change the direction
Agility
Refers to the idea that training should be specific to the activity or skill being trained
Specificity
Also known as SAID
Specificity
Specificity applies to
Muscle and movements
Energy systems
Speed of movement
When you gradually increase the weight frequency or number of repetition
Progressive overload
FITT
Frequency intensity time type
Number of times exercise is undertaken in a week
Frequency
Level of difficulty of the exercise
Intensity
Refers to how long an exercise sessions last
Time
Refers to the variety of training a performer undertakes
Type
States that each person is unique and therefore everyone’s response that they experience toward exercise is different
Individual differences/needs
What are the things to consider in individual differences or needs
Athlete’s genetic
Fitness
Skills
Adaptability
Experience
Increases the risk of injury and illness and can decrease how will you perform
Overtraining
Two types of recovery
Passive recovery
Active recovery
Taking the entire day of from exercise
Passive recovery
Engage in a low intensity exercise, praising minimal stress on the body
Active recovery
How a person loses fitness advancement or gains when they stop exercising
Reversibility
The rate at which fitness gains are reversed
Reversibility
Types of somatotype
Endomorph
Mesomorph
Ectomorph
Characterized by overweight or obese. Described as having around, low muscle mass, short limbs, when the large head
Endomorph
Describe as muscular body type. Have white shoulder and narrow hips, moderate bone mass, low fat levels.
Mesomorph
Individuals with long lean muscle arms and legs. Characterized by low levels of fat storage and an overall inability to gain weight and develop muscle mass.
Ectomorph