68993

Answer: 1) Activation of glycogen phosphorylase by epinephrine
Explanation: Epinephrine acts on the beta-adrenergic receptors of liver and muscle cells, which activate protein kinase. This kinase then phosphorylates and activates glycogen phosphorylase, an enzyme that breaks down glycogen into glucose-1-phosphate, which is rapidly converted to glucose-6-phosphate for use in glycolysis or for release into the bloodstream to maintain glucose levels during stress.

20731

In achondroplasia, the cartilage columns lack orderly arrangement and fail to calcify properly.

77987

Theophylline is a methylxanthine derivative that acts as a phosphodiesterase inhibitor, leading to increased intracellular cyclic AMP (cAMP) levels. This can stimulate various cellular processes, including smooth muscle relaxation and bronchodilation in the respiratory system. It also enhances insulin secretion.

85462

Each of the following statements about local anaesthesia is correct except: Prilocaine is more toxic than lignocaine.

51119

Causalgia is severe, burning pain that arises after injury to or sectioning of a peripheral sensory nerve. It is characterized by intense burning sensation, allodynia, and hyperalgesia in the distribution of the damaged nerve. Temporal arteritis is vascular inflammation, neuralgia is nerve pain without structural damage, and neuritis is nerve inflammation, but causalgia specifically refers to post-traumatic nerve pain.

32626

This method is used to diagnose tongue thrusting in a child. By holding the lower lip lightly, the child cannot use their lip muscles to aid in swallowing, which forces them to use their tongue in the characteristic thrusting manner if they have the condition.

12955

Garre's osteomyelitis (proliferative periostitis) is a chronic inflammatory response predominantly seen in children and young adults with a mean age of 13, often associated with a periapical infection of a mandibular molar.

27494

Cosmetic surgery after puberty is the treatment for a child with cherubism.

13403

24896

In the treatment of oral cancers, the fraction of total dose given in each appointment is typically around 150 rad.