muscle

Question 1

types of muscle

Answer 1

• skeletal
• smooth
• cardiac

Question 2

types of muscle

Answer 2

• skeletal
• smooth
• cardiac

Question 3

skeletal muscle characteristics

Answer 3

• striated
• multinucleated peripheral nuclei
• cells surrounded and bundled by CT
• voluntary muscle
• attached to bone and skin of face –> body movements and facial expressions
• stability of body
• limited regenerative ability
• can synthesise proteins

Question 4

cardiac muscle characteristics

Answer 4

• striated
• involuntary - autonomic NS
• only found in walls of heart
• multinucleated and central nuclei
• has contractile ability
• contains intercalated discs
• branched
• self-excitation ability - do not need stimuli
• cannot regenrate

Question 5

smooth muscle characteristics

Answer 5

• non-striated
• involuntary - controlled via ANS
• found in walls of hollow organs, blood vesssles
• single nucleus in the centre
• function = moves contents through organs; involved in vasocontrction - BP control; childbirth, digestion, thermoregulation, stability/posture
• fusiform (spindle shaped)
• ## greatest capacity of regeneration and repair