The pericardial sinus surrounds the heart. The peri-visceral sinus surrounds the internal organs. The perineural sinus surrounds the nerve cord. Place the ganglia of the cockroach's autonomic nervous system in the correct order from the anterior end to the posterior end.
What is the peri-visceral cave of a cockroach?
The cockroach hemocoil (the body cavity through which blood flows) is divided into three sinuses due to the presence of the ventral and dorsal diaphragms. The pericardial sinus is above the dorsal diaphragm. The peri-visceral sinus lies between the dorsal and ventral diaphragms.
Which of the following helps cockroach contraction?
Blood lymph is circulated by the contraction and relaxation of the heart supported by skeletal muscle. It does not help breathing because it has no respiratory pigments. A pair of skeletal muscles are laterally attached to the wall of each chamber. Therefore, this is the correct option.
What is the cockroach aorta?
Heart and Aorta: The cockroach's heart is an elongated, contractile, thin tube that lies along the dorsal centerline of the chest and abdomen just below the tergum. .. The heart is closed behind, but continues anteriorly as a short, thin tube with no small holes called the aorta.
Which is the blood circulation route of cockroach?
Heart- & gt; Ostia- & gt; Pericardial sinus- & gt; Pericardial sinus- & gt; Head hemocoil.
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