Human Bio Final Flashcards
Pectoral Girdle
made up of 2 clavicles
2 scapulas
Clavicle
keeps shoulder in place and stable
Scapula
- glenoid cavity articulates with the head of the humerus
- acromion articulates with acromial end of clavicle
Head of Radius
articulates with capitulum of humerus
Styloid Process
attaches muscle for wrist
Carpals
- Scaphoid
- Lunate
- Triquetrum
- Pisform
- Trapezium
- Capitate
- Hamate
Pelvic Girdle
- consists of 2 coxal
- they are connected by cartilage (pubic symphesis)
- fibrocartilage
Acetabulum
socket where the femur head fits
Linea Aspera
attachment point for leg muscles
Tarsals
- Talus
- Calcarpus
- Navicular
- Third Cuniform
- Second Cuniform
- First Cuniform
- Cuboid
Perimysium
wrapping around the fasicle dense irregular tissue
Epomysium
outer most covering dense connective tissue, encircle entire tissue
Endomysium
wrapping of areolar connective around muscle fiber
Skeletal Muscle Fiber
made up of smaller microscopic units called sarcomeres
Sarcolemma
plasma membrane of a muscle fiber
Sarcoplasm
cytoplasm of a muscle fiber
Myoglobin
red pigment in muscles to carry oxygen
Sarcomeres
unit of muscle contraction is made up of actin and myosin
Z line to Z line
one sarcomere length
M line to M line
the middle of sarcomere
H zone
takes in only thick (myosin)
A band
take in entire myosin length
I band
takes only actin with no myosin
Antagonist
muscle in the movement that stretches