Which organ is part of both the male reproductive system and the urinary system?.

 

 

 

Choice A is wrong because the thoracic cavity is the upper portion of the trunk, and it contains the heart, lungs, esophagus, and thymus gland.

Choice C is wrong because the pleural cavity is a subdivision of the thoracic cavity, and it contains one lung.

Choice D is wrong because the abdominal cavity is the upper portion of the abdominopelvic cavity, and it contains the stomach, liver, pancreas, spleen, gallbladder, kidneys, small intestine, and most of the large intestine.

Red bone marrow is the site of blood production in infants after birth. Red bone marrow is found in the spongy tissue of some bones, such as the sternum, ribs, pelvis, and vertebrae.

Choice B is wrong because red pulp in the spleen is involved in filtering and recycling old red blood cells, not producing new ones.

Choice C is wrong because the heart is not a site of blood production, but a pump that circulates blood throughout the body.

Choice D is wrong because sinusoids of the liver are enlarged capillaries that allow blood to flow from the portal vein to the hepatic vein. They are not involved in blood production

The correct answer is choice B. Left ventricle. The left ventricle has the thickest wall because it pumps blood to the whole body through the aorta, which requires a lot of pressure.

The other choices are wrong because:

The normal range of wall thickness for the left ventricle is 0.6 to 1.1 cm. The normal range of wall thickness for the right ventricle is 0.3 to 0.5 cm.

The correct answer is choice C. Hinge.

The elbow joint is a synovial joint that allows for flexion and extension of the forearm. It is classified as a hinge joint because it permits movement in only one plane (uniaxial).

Choice A. Saddle is wrong because a saddle joint allows for movement in two planes (biaxial), such as the joint between the trapezium carpal bone and the first metacarpal bone at the base of the thumb.

Choice B. Pivot is wrong because a pivot joint allows for rotational movement around a single axis, such as the joint between the atlas and axis vertebrae.

Choice D. Ball and socket is wrong because a ball and socket joint allows for movement in three planes (multiaxial), such as the joint between the humerus and scapula at the shoulder.