support and movement Flashcards
How many muscles are there in the human body?
650
½ our body weight comes from muscles
veterbral column has how many bones in adults
26
veterbral column has how many bones in infants
33
Skeletal muscle has how many parts?
3
1. Origin
2. Belly
3. Insertion
Which of the following is the largest bone in the human body?
femur
Bone matrix is hardened by the
Calcium phosphate
First vertebra of cervical region of vertebral column is known as:
Atlas
which ions help in muscle contraction
In muscle contraction, both Ca2+ and Mg2+ are used. Ca2+ helps in the formation of actomyosin by combining actin and myosin proteins. This will provide contraction in muscle. ATPase activity of myosin requires both Ca2+ and Mg2+. This helps in release of energy.
Tendon and ligament are example of
Dense regular connective tissue
Which type of muscles have intercalated disc?
Intercalated discs allow cardiac muscles to contract in a wave-like pattern.
Intercalated disc represents the undulating double membranes where two cells are tightly bounded together by desmosome.
The I band have midline called
The I band have midline called Z–line (Z for zwishen means between).
Sarcoplasm of muscle fibres differs from cytoplasm of other cells as it contains usually?
It mainly contain unique oxygen binding protein called myoglobin. It stores oxygen to be used during exercise
The cartilage matrix is covered by a dense layer of collagen fibres, called:
Perichondrium
When the electrical impulses reaching a muscle fibre cease the sarcoplasmic reticulum begins to re-accumulate the calcium ions by:
Active Transport
epiglottis and pinna are made up of which cartilage
elastic
which parts are made of hyaline
Trachea, larynx and nasal
Which joint is also known as suture
Suture are present in skull and has fibrous joint
Joint of sternum and ribs is
Cartilaginous
what is concerned with rheumatoid arthritis?
cartilage
The functional partners of bone is
Skeletal muscle
A cup like socket of shoulder joint is:
glenoid
which type of muscle is branched
only cardiac
_______% of the energy expended in muscles contraction is used in work?
35
while rest 65% raises the temperature of body
ankle joints are
Cartilaginous
