Answer:
True
Explanation:
Pacemaker cells, unlike other neurons in the body, can depolarized themselves (and therefore can fire action potentials) without the need of an external innervation of the autonomic nervous system.
Each class of pacemaker cells has its own intrinsic rate.
For example, sinoatrial node rate is 60-100 bpm (the normal heart frequency).
The atrioventricular node is also part of the electrical conduction system of the heart. When the sinoatrial node fails, atrioventricular node takes the lead (40-60 bpm).
Answer:
Waste products excreted by kidney are uric acid, urea, creatinine and salts.
Explanation:
Kidneys are the bean shaped organs involved in the process of excretion. The nephrons are present in the kidney acts as the main filtration unit of the excretory system.
The urine is formed by the kidney including three main process - glomerular filtration, tubular reabsorption and tubular secretion. The urine contains excess ions, phenols and sulfates. Some amount of uric acid and creatinine are excreted by the kidney.
Answer:
STD, which is short for Sexually transmitted diseases, includes any number of diseases that are transmitted through human sexual behaviors.
UTI, which is short for Urinary tract infection, is an infection in any part of the urinary system, which is the system of the body that collects and excretes liquid waste.
Answer:
( a ) Voltage gated channels - channel can open and close based on membrane potential. At rest, the channel is closed and it opens at threshold.
Explanation:
Voltage Gated Channels -
It is a channel with a cluster of proteins present in the membrane .
The function of voltage - gated channel is to open for the some values of membrane potential and close for others . In maximum cases , the relation between channel state and membrane potential is probabilistic and requires a time lag . The ion channel can even flip the conformations at an unpredictable times , the membrane potential even determines the rate of transition and the probability per unit time of each and every transition .
Answer:
What do u think try reading it again
Explanation:
