How are they related?
The integumentary system protects the muscles, which produces heat, and in turn increases blood flow to skin. The heat promotes activation of sweat glands. If we didn't have this protection, the muscles would be damaged by the external environment and would not be able to function properly. Involuntary muscle contractions (shivering) work with the skin to control body temperature. Muscles also act with facial skin to create expressions.
Reflection of the Muscular System:
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body.Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person’s body weight. Muscle tissue is
also found inside of the heart, digestive organs, and blood vessels. There are three types of muscle tissue:
Visceral-
*found inside of organs like the stomach, intestines, and blood vessels
*contracts to move substances through organs
*weakest muscle tissue, involuntary control
Cardiac-
*found only in the heart
^pumps blood through the body
*involuntary
control
Skeletal-
*every action preformed requires skeletal muscle
*most are attached to two bones across a joint
*only voluntary muscle
Skeletal muscles are named based on many different factors, including their location, origin and insertion, number of origins, shape, size, direction, and function. Skeletal muscles rarely work by themselves to achieve movements in the body. More often they work in groups to produce
precise movements.
Sarcomere Structure
Sarcomeres are made of two types of protein fibers: thick filaments and thin filaments. Thin filaments also known as actin, contain myosin-binding sites that allow myosin to connect and move actin during muscle contraction. Thick filaments also known as myosin, are activated by ATP and bind to actin to create a contraction.
Motor Units
Nerve cells called motor neurons control the skeletal muscles. Each motor neuron controls
several muscle cells in a group known as a motor unit.
Muscle Metabolism and Fatigue
Muscles get their energy from different sources depending on the situation that the muscle is working in. Muscles use aerobic respiration when we need to produce a low to moderate level of force. Aerobic respiration requires oxygen to produce about ATP molecules from a molecule of glucose. When muscles run out of ATP, muscle fibers produce more as
needed.
Muscular System Diseases & Tests
There is no single type of doctor that treats muscular diseases and disorders. Rheumatologists, orthopedists and neurologists may all treat conditions that affect the muscles.
inflammatory myopathies:
*group of diseases that involve chronic muscle inflammation, accompanied by
muscle weakness.
myasthenia gravis
*fluctuating weakness of the voluntary muscle groups
amyotrophic lateral sclerosis
* disease of the nerve cells in the brain and spinal cord that control voluntary muscle movement
Diagnostic tests used for the muscular system:
*ESP, DXA, CT, MRI, nerve tests, & ultrasonography.
Sources:
Mostly
my notes
"Tests for Musculoskeletal Disorders." : Diagnosis of Musculoskeletal Disorders: Merck Manual Home Edition. N.p., n.d. Web. 09 Feb. 2015. <//www.merckmanuals.com/home/bone_joint_and_muscle_disorders/diagnosis_of_
musculoskeletal_disorders/tests_for_musculoskeletal_disorders.html>.
"Interactions With Other Systems - the Integumentary System." Interactions With Other Systems - the Integumentary System. N.p., n.d. Web. 08 Feb. 2015. <//sites.google.com/a/nths219.org/the-integumentary-system/interactions-with-other-systems>.
Zimmermann,
By Kim Ann. "Muscular System: Facts, Functions & Diseases." LiveScience. TechMedia Network, 25 Nov. 2014. Web. 04 Feb. 2015. <//www.livescience.com/26854-muscular-system-facts-functions-diseases.html>.
In this anatomy course, part of the Anatomy XSeries, you will learn how the components of the integumentary system help protect our body (epidermis, dermis, hair, nails, and glands), and how the musculoskeletal system (bones, joints, and skeletal muscles) protects and allows the body to move. You will engage with fascinating videos, lectures, and anatomical visual
materials (illustrations and cadaveric images) to learn about these properties and functions.Description
Subjects
Series
-
Anatomy
Language
English
Duration
4 weeks
Status
Available
U-M Credit Eligible
No