BI 121 GRCC- Periard Questions with
Complete Solutions
What does the endocrine system do? directs long-term changes in activities of other organ
systems
ex organs: pituitary gland, thyroid, thymus gland
What does the cardiovascular system do? internal transport of cells and dissolved
materials.
ex organs: heart, arteries, blood
What does the lymphatic system do? defense against infection and disease
ex organs: lymph nodes, lymph
What does the respiratory system do? transport of air to, and from, sites of gas exchange
between air and blood.
ex organs: lungs, trachea, bronchi
What does the digestive system do? processing of food and absorption of nutrients
, ex organs: esophagus, liver, stomach, intestines
What does the urinary system do? elimination of excess water, salts, and waste products
ex organs: kidneys, uterus, bladder, urethra.
What does the reproductive system do? production of sex cells and hormones
ex organs: sperm, eggs, ovaries, testes.
Our body has about how many cells in it? 100 trillion
We keep both our cells and the fluid surrounding our cells in a dynamically stable environment
via a process called...? homeostasis
positive feedback the response increases change of the stimulus, the body is moved away
from homeostasis.
ex: Childbirth
Complete Solutions
What does the endocrine system do? directs long-term changes in activities of other organ
systems
ex organs: pituitary gland, thyroid, thymus gland
What does the cardiovascular system do? internal transport of cells and dissolved
materials.
ex organs: heart, arteries, blood
What does the lymphatic system do? defense against infection and disease
ex organs: lymph nodes, lymph
What does the respiratory system do? transport of air to, and from, sites of gas exchange
between air and blood.
ex organs: lungs, trachea, bronchi
What does the digestive system do? processing of food and absorption of nutrients
, ex organs: esophagus, liver, stomach, intestines
What does the urinary system do? elimination of excess water, salts, and waste products
ex organs: kidneys, uterus, bladder, urethra.
What does the reproductive system do? production of sex cells and hormones
ex organs: sperm, eggs, ovaries, testes.
Our body has about how many cells in it? 100 trillion
We keep both our cells and the fluid surrounding our cells in a dynamically stable environment
via a process called...? homeostasis
positive feedback the response increases change of the stimulus, the body is moved away
from homeostasis.
ex: Childbirth
