Question

The benefits of aerobic exercise include all of the following EXCEPT an ____.

	increased number of mitochondria
	increased blood supply
	increased supply of myoglobin
	increased number of fibers in a motor unit
	increased activity of lipoprotein lipase

The heart is in which body cavity?

	cranial
	thoracic
	spinal
	abdominal
	pelvic

What stops growth plates from calcifying, preserving their ability to grow?

	growth hormone
	calcium
	phosphate
	signals from the digestive system
	thyroid hormone

18 of 30

Which tissue includes the epidermis?

	muscle tissue
	nervous tissue
	epithelial tissue
	connective tissue
	reproductive tissue

Question

19 of 30

When body temperature is too low, which of the following occurs?

	The thermostatic control center of the brain is deactivated.
	Blood vessels in the skin contract.
	Evaporative cooling occurs.
	Heat radiates from the skin.
	Blood vessels at the body surface fill with warm blood.

Answer 1

Answer 1. Increased supply of myoglobin

Answer 2. Thoracic cavity contains heart and lungs

Answer 3. Growth hormone

Justification for 1 and 2.. Theoretical knowledge

Answer 4. Epithelial tissue

Justification : epithelial tissue are the integral part of epidermis. Muscle and connective tissues are part of muscles while nervous tissue and reproductive tissues are part of nervous system and reproduction system, respectively

Answer 5. Blood vessels in the skin contract

Justification : contraction of blood vessels will lead to reduction in heat loss from blood.