An organ that produces hormones is known as a ___________.

• tissue

• gland

• hormone

• duct

Endocrine glands make and release _____.

• hormones

• neurotransmitters

• saliva

• nerve impulses

What is the function of the endocrine system?

• Transport gases, nutrients, and waste around the body

• Store minerals like calcium

• Release hormones to maintain homeostasis

• Move the body through the environment

Which organ system is pictured?

• Endocrine

• Circulatory

• Nervous

• Muscular

• Skeletal

Which is a function of the circulatory system?

• to move water throughout the body

• to transport gases throughout the body

• to eliminate waste from the body

• to provide structural support for the body

Which of the following is a synonym for the circulatory system?

• respiratory system

• digestive system

• nervous system

• cardiovascular system

Which system is responsible for providing oxygen to cells?

• The nervous system

• The circulatory system

• The muscular system

• The skeletal system

• The endocrine system

The heart is a part of which organ systm?

• The nervous system

• The skeletal system

• The circulatory system

• The muscular system

• The endocrine system

These cells, in the blood, carry oxygen and give the blood its color.

• white blood cells

• plasma

• platelets

• red blood cells

Capillaries, veins, and arteries are all _______.

• blood vessels

• blood cells

• parts of the nervous system

• tissues