Chapter 1

Question 1

What is smooth muscle tissue?

Answer 1

• involuntary tissue
• found in walls of blood vessels + most internal organs

Question 2

what is cardiac muscle tissue?

Answer 2

• involuntary tissue found only in the heart
• controls itself with fine-tuning from nervous and endocrine system

Question 3

what is skeletal muscle tissue ?

Answer 3

• voluntary tissue that moves the skeleton to produce movement for exercise

Question 4

Define muscle tissue

Answer 4

cells specialzed for contracting which creates tension, producing movement

Question 5

what is a sarcomere?

Answer 5

basic functional unit of a myofibril

Question 6

What is the sarcolemma?

Answer 6

composed of the plasmalemma + basment membrane

Question 7

What is a tendon ?

Answer 7

fibrous chords of connective tissue, that transmit the force generated by muscle fibres to the bones, creating motion. muscles attached to bone via tendon

Question 8

plasmalemma (cell membrane)

Answer 8

• Fuses with tendon
• Conducts action potential from the motor neuron to the muscle fiber
• Maintains pH, transports nutrients into the muscle fibers

Question 9

What are satelite cells?

Answer 9

• between the plasmalemma and the basement membrane
• Muscle growth and development and in adaption to injury, immobilisation and training

Question 10

What is the sarcoplasm?

Answer 10

A gelatin-like substance which fills the spaces within and inbetween the myofibrils, Contains many dissolved proteins, minerals, glycogen, fats and organelles and has high quantity of stored myoglobin

Question 11

T-tubules

Answer 11

• Extensions of plasmalemma
• Carry action potentials and other substances deep into muscle fiber; and waste products out of the cell

Question 12

Sarcoplasmic reticulum

Answer 12

-Longitudinal network of tubules
- storage for calcium (essential for muscle contractions)