ENGLISH CLUB 06/07/25

The connective tissue containing collagen and elastin matrix that functions to provide tensile strength to joints is:

• Tendon

• Ligament

• Hyaline cartilage

• Elastic cartilage

The organ in the bird's digestive system that functions as 'teeth' to mechanically break down food is:

• Proventriculus

• Crop

• Ventriculus (gizzard)

• Small intestine

The eye structure that undergoes accommodation through ciliary muscle contraction to focus light is:

• Cornea

• Iris

• Crystalline lens

• Vitreous humor

The main respiratory muscle that contracts during inspiration and is innervated by the phrenic nerve is:

• External intercostal muscle

• Internal intercostal muscle

• Diaphragm

• Accessory respiratory muscle

The blood circulation system in fish that has a single circuit with low blood pressure in the gill capillaries is:

• Systemic circulation

• Pulmonary circulation

• Single circulation

• Portal circulation

The part of the nephron that functions in active reabsorption of glucose, amino acids, and 65% of sodium is:

• Proximal convoluted tubule

• Glomerulus

• Distal convoluted tubule

• Collecting duct

The structure in the bird's respiratory system that enables counter-current flow for maximum efficiency is:

• Parabronchi

• Air sacs

• Primary bronchus

• Trachea

The type of muscle with short, branched fibers and gap junctions for electrical conduction is:

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

• Visceral muscle

The vestibular organ that detects linear acceleration and head position relative to gravity is:

• Semicircular canals

• Utricle and saccule

• Cochlea

• Organ of Corti

The endometrial layer of the uterus that undergoes cyclic hormonal changes and sheds during menstruation is:

• Stratum basalis

• Stratum functionalis

• Myometrium

• Perimetrium