Question

Read the following statements and choose the statements which are incorrect.
$\left(a\right)$ Blood cells secrete fibers of structural proteins called collagen or elastin.
$\left(b\right)$ Neuroglial cells protect and support the nephrons.
$\left(c\right)$ Osteocytes are present in spaces called lacunae.
$\left(d\right)$ Striated muscle fibers are bundled together in a parallel fashion.
$\left(e\right)$ Biceps are involuntary and striated.

• A. c and d
• B. b and d
• C. a and c
• D. a, d, and e

Answer 1

Answer: (D)

Blood is a specialized fluid connective tissue as it lacks fibres. Neuroglial cells are supporting cells of nervous system and forms more than half of total cells in this system. Osteocytes and Chondrocytes are present in spaces known as lacunae and these are present in the matrix. Lacunae of osteocytes also show presence of canaliculi which is absent in lacunae of chondrocytes. Striated muscle bundles are not in parallel fashion. Biceps are skeletal muscles and hence show striations and are voluntary in function.