Anatomy & Physiology Flashcards
Types of Muscle Cells
- Skeletal (multinucleated rectangular or cigar shaped)
- Cardiac (Striated)
- Smooth (Uni-nucleated)
Which muscle cells are involuntary?
Cardiac & Smooth
Features of Muscles
- Excitable
- Contractile
- Extensible (could be stretched)
- Elasticity
Integument system consists of
- Skin
- Associated specializations (hair, nails, sebaceous glands)
Layers of the epidermis (inside out)
- Stratum germinativum (basal)
- Stratum spinosum
- Stratum granulosum
- Stratum lucidum
- Stratum Corneum (OUTER)
The skin layer made of inner connective tissue, with dense vascular structure, lymphatics & cutaneous nerves…
Dermis
The hypodermis (subcutaneous) is made up of…
looser connective tissue that facilitates the movement of the overlying skin
Connective tissue sheaths of the muscular system (from outer to inner)
Epimysium (dense, fibrous, irregular connective tissue)
Perimysium ( dense, fibrous, irregular connective tissue)
Endomysium (areolar connective tissue)
The functional unit of a muscle cell is
Sarcomere (Distance between two Z-discs)
The term for chains of actin & mysoin:
Myofilament
The term for thin actin filaments:
Microfilament
The muscle cell contains two bands, which are…
I-band (light band, with thin actin filaments)
A-band (dark band with thin actin & thick mysoin)
Z line is at the intersection between…
two I-bands
The tendious muscle attachment with Least movement is the …
Origin
The tendious muscle attachment with Most movement is the …
Insertion
