STD 12 - 7. human health and disease — NEET STD 11 Science — Question

In humans majority of nephrons have their the loop of Henle in the

Male and female Cockroaches can be distinguished externally through

Mark the given statements True (T) or False (F) :
(i) The neural system provides an organized network of point-to-point connections for quick coordination. The endocrine system provides chemical integration through hormones.
(ii) The PNS includes the brain and spinal cord and is the site of information processing and control.
(iii) The efferent nerve fibres transmit impulses from tissues/organs to the CNS and the afferent fibres transmit regulatory impulses from the CNS to the concerned tissue.
(iv) The PNS is divided into two division called somatic and autonomic neural system.
(v) The autonomic neural system is classified into sympathetic and parasympathetic neural system.
(vi) The axon of neurons contain certain granular bodies called nissl's granules.
(vii) Bipolar type of neurons are found in retina of eye which contain one axon and one dendrite.
(viii) Unmyelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath around the axon.
(ix) The gap between two adjacent myelin sheaths is called nodes of ranvier.
(x) At resting state, axonal membrane is comparatively more permeable to Na⁺ ions and nearly impermeable to K⁺ ions.
(xi) The sodium-potassium pump transport 2Na⁺ outwards and 3K⁺ into the cell.
(xii) The electrical potential difference across the resting plasma membrane is called as the resting potential.
Choose the correct option given below :-

Production, secretion and ejection of milk requires the synergistic effects of prolactin and

Which of the following are phagocytic in nature?

Legally acceptable term of abortion is

If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?