Multiple Choice QuestionsThe striated appearance of a myofibril is due to the distribution pattern of
actin and myosin
fascicles
troponin
meromyosin
meromyosin
Label the pans marked in the human skull and select the correct option
A - Temporal bone; B - Parietal bone; C - Sphenoid bone; D - Frontal bone; E - Zygomatic bone; F - Occipital bone
A - Frontal bone; B - Zygomatic bone; C - Occipital bone; D - Sphenoid bone; E - Parietal bone; F - Temporal bone
A - Sphenoid bone; B - Occipital bone; C - Zygomatic bone; D - Parietal bone; E - Frontal bone; F - Temporal bone
A - Sphenoid bone; B - Zygomatic bone; C - Occipital bone; D - Frontal bone; E - Temporal bone; F - Parietal bone
A - Sphenoid bone; B - Zygomatic bone; C - Occipital bone; D - Frontal bone; E - Temporal bone; F - Parietal bone
The 'U' shaped bone present at the base of the buccal cavity is
Maleus
Ethmoid
Zygomatic
Hyoid
Hyoid
Choose the wrongly matched pair
Portion of myofibril between two 'Z' lines – Sarcomere
Isotropic band – Actin
Anisotropic band – Myosin
Central part of I-band – M-line
Central part of I-band – M-line
D.
Central part of I-band – M-line
In a myofibril the dark bands i.e. A bands and light bands i.e. I bands are present alternatley. Each 'I' band has at its centre a dark membrane called Z line. The part of myofibril between two successive Z lines is called a sarcomere.
Most of the cartilages in vertebrate embryo are replaced in adult by
Blood
Bones
Tendons
Ligaments
Ligaments
Gliding joint is present between the
Carpals
Humerus and pectoral girdle
Carpal and metacarpal of thumb
Knee
Knee
The lumbar region of the vertebral column in man is made up of
1 fused vertebra
7 vertebrae
12 vertebrae
5 vertebrae
5 vertebrae
The skeletal muscle fibre is a 'syncytium', which means it is
made up of many fibres
made up of many proteins
long and slender
swollen in the middle with tapered ends
swollen in the middle with tapered ends
The central hollow portion of the human vertebra is called
Acromion
Centrum
Neural canal
Sternum
Sternum
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