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Human Biology Lab 7
Muscle & Muscle Action
11
Biology
Undergraduate 2
12/25/2011

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Term

Muscle Tissue

↓            ↓           ↓

skeletal  smooth     cardiac

Definition

Tissue a group of biological cells that perform a similar function;

Muscle Tissue tissue consisting of cells that are specialized to shorten or contract, resulting in movement of some kind. There are three types of muscle tissue: 

Skeletal muscle is a form of striated muscle tissue existing under voluntery control and muscle ussualy attached to skeleton.  

 

Smooth muscle is controled by invalentery movement mainly makes up organs and blood vessels.

Cardiac is controled by involuntary movment the only organ it creates is heart. It made up of cylinders-strieted fuced brenches. 

(for pictures and more info.  http://en.wikipedia.org/wiki/Skeletal_striated_muscle )                           

 

 

 

 

 

 

 

 

 

 

 

Term
muscle fibers(cells)
Definition
is a single muscle cell. A connective tissue fiber is a thin strand of extracellular material.
Term

protein in fibers

↓           ↓

action   myosin

Definition

Action a brief change in membrane potential of a nerve or muscle cell due to the movement of ions across plasma membrane. Also called a nerve impulse.

Myosin is principle contractile proteins found in muscle. It's composed of thick filaments with cross-bridges.

 

Term
striations
Definition
 is a form of fibers that are combined into parallel fibers.
Term
intercalated discs
Definition
 Inside the cardiac muscles is the intercalated discs which is known to join various adjacent cells together.. It is only when it functions properly that the heart can work effectively.
Term

extension vs. fiexion

(movement term 1)

 

Definition

extention when moving small body part away from self.

flexion when moving small body part toward your self.

http://www.imaios.com/Media/Images/e-anatomy/Anatomical-terms-of-location-position-motion/extension-flexion-dorsiflexion-plantar

Term

abduction vs. adduction

(movement terms 2 )

Definition

 

 

 

 

 

 

 

abduction when moving limb away from the body.

adduction when moving limb toward body.  

http://www.daviddarling.info/encyclopedia/A/adduction.html

Term

supination vs. pronation

(movement terms 3)

Definition
Supination is to rotate the forearm so that the palm faces up(celing). 
Pronation is to rotate the forearm so that the palm faces down( floor).
Term
origination bone
Definition

from where muscle is attached

(ex: scapula, humerus)

(for pictures:

http://www.google.com/imgres?imgurl=http://www.enchantedlearning.com/hgifs/Humanskel_bw.GIF&imgrefurl=http://www.enchantedlearning.com/subjects/anatomy/skeleton/Skelprintout.shtml&h=485&w=296&sz=11&tbnid=Us2wiAGlX3a9lM:&tbnh=90&tbnw=55&zoom=1&docid=v6M4xlewRzuW7M&hl=en&sa=X&ei=2333Tr_9DuWU0QHtqPm3Ag&sqi=2&ved=0CDYQ9QEwAQ&dur=3502

Term
insertion bone
Definition

to which bone muscle is attached not on the main skeleton.

(ex: radium, ulna)

Term
tendons
Definition
a cord of dense fibrous connective tissue attaching muscle to bone.
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