NURS 106 Exam Questions & Answers
What are the three layers of connective tissue that surrounds skeletal muscle
-Epimysium
-Perimysium
-Endomysium
What are the 5 Main functions of skeletal muscle
-movement
-support
-protection
-heat protection
-nutrient storage
-blood circulation
Define Movement in the skeletal system
Skeletal muscles are what allow us to move
Define the support role of the skeletal system
Skeletal muscles help protect and support soft tissues and internal organs
Explain how skeletal muscles allow us to generate heat
When muscles contract they generate heat. So when the bod shivers it is trying to generate heat
to warm up the body
How does skeletal muscle store nutrients in the body
- We have proteins in our muscles that we can break down and get nutrients from if we
desperately need
How does skeletal muscle impact blood circulation
Muscles located in the lower legs help push blood back up so that it can be circulated
throughout the body
Each muscle is surrounded by
dense connective tissue
All muscle is specialized for
contraction
,muscle excitability
-can propagate Action Potentials
-Muscle contraction is stimulated by nervous or electrical impulses
Muscle contractability
ability to shorten when stimulated
Muscle extensibility
How far a muscle can extend without being damaged
Muscle elasticity
muscle's ability to be stretched, compressed, or distorted and then return to its normal state
(recoil)
Epimysium
-Dense layer of collagen-rich tissue that surrounds the whole muscle and separates it from the
other tissues and organs in your body
-Usually connected to the deep fascia
Perimysium
- A Surrounding tissue
-Surrounds fascicles
-Houses blood vessels and nerves that supply blood to the tissue
Endomysium
Connective tissue surrounding a muscle fiber
-Endo meaning "In"
Myocyte
A singular muscle cell or fiber
- Long cylindrical shaped cells
- Multinucleated
List the "Bundles within Bundles" from smallest to largest.
-Myofilaments
-Myofibril
, -Myocyte (Muscle fibre)
-Fascicle
Thick filament is made up of :
Myosin
Thin filament is made up of:
Actin
What give skeletal muscle it's striped appearance
Skeletal muscle has a striped appearance due to the how the thick and thin filaments arrange
themselves
"ad" means
to, towards
ab means
"Away from"
Rectus means
straight, parallel to midline
Sub means
Under
-Think submarine goes underwater
"origin"
attached to the fixed part of the bone
"Insertion"
attached to bone that will move
Main muscle doing the work during contraction
Agonist
muscle that lengthens or relaxes during contraction is the
Antagonist
Hydrolization (Hydrolysis)
What are the three layers of connective tissue that surrounds skeletal muscle
-Epimysium
-Perimysium
-Endomysium
What are the 5 Main functions of skeletal muscle
-movement
-support
-protection
-heat protection
-nutrient storage
-blood circulation
Define Movement in the skeletal system
Skeletal muscles are what allow us to move
Define the support role of the skeletal system
Skeletal muscles help protect and support soft tissues and internal organs
Explain how skeletal muscles allow us to generate heat
When muscles contract they generate heat. So when the bod shivers it is trying to generate heat
to warm up the body
How does skeletal muscle store nutrients in the body
- We have proteins in our muscles that we can break down and get nutrients from if we
desperately need
How does skeletal muscle impact blood circulation
Muscles located in the lower legs help push blood back up so that it can be circulated
throughout the body
Each muscle is surrounded by
dense connective tissue
All muscle is specialized for
contraction
,muscle excitability
-can propagate Action Potentials
-Muscle contraction is stimulated by nervous or electrical impulses
Muscle contractability
ability to shorten when stimulated
Muscle extensibility
How far a muscle can extend without being damaged
Muscle elasticity
muscle's ability to be stretched, compressed, or distorted and then return to its normal state
(recoil)
Epimysium
-Dense layer of collagen-rich tissue that surrounds the whole muscle and separates it from the
other tissues and organs in your body
-Usually connected to the deep fascia
Perimysium
- A Surrounding tissue
-Surrounds fascicles
-Houses blood vessels and nerves that supply blood to the tissue
Endomysium
Connective tissue surrounding a muscle fiber
-Endo meaning "In"
Myocyte
A singular muscle cell or fiber
- Long cylindrical shaped cells
- Multinucleated
List the "Bundles within Bundles" from smallest to largest.
-Myofilaments
-Myofibril
, -Myocyte (Muscle fibre)
-Fascicle
Thick filament is made up of :
Myosin
Thin filament is made up of:
Actin
What give skeletal muscle it's striped appearance
Skeletal muscle has a striped appearance due to the how the thick and thin filaments arrange
themselves
"ad" means
to, towards
ab means
"Away from"
Rectus means
straight, parallel to midline
Sub means
Under
-Think submarine goes underwater
"origin"
attached to the fixed part of the bone
"Insertion"
attached to bone that will move
Main muscle doing the work during contraction
Agonist
muscle that lengthens or relaxes during contraction is the
Antagonist
Hydrolization (Hydrolysis)
