The Endocrine System

Unhealthy lifestyle

Poor diet

Irregular sleep patterns

Psychological stress

It releases chemical messages into the bloodstream.

It controls voluntary muscle movements.

It digests food and absorbs nutrients.

It filters waste from the blood.

The correct receptor protein

A lipid membrane

A secondary messenger

A hormone-producing enzyme

Steroid hormones are made of lipids and can pass through cell membranes.

Nonsteroid hormones need a secondary messenger to send signals.

Steroid hormones cannot enter the nucleus.

Nonsteroid hormones are made of lipids.

Hypothalamus

Pineal gland

Thyroid gland

Parathyroid gland

Regulating metabolism

Controlling sleep patterns

Producing T-cells

Regulating calcium levels

Thymus gland

Pituitary gland

Pineal gland

Thyroid gland

Adrenaline and cortisol

Insulin and glucagon

Estrogen and progesterone

Testosterone and sperm

It regulates blood sugar levels.

It releases insulin and glucagon.

It produces female sex hormones.

It controls the hypothalamus

Release male sex hormones and produce sperm

Regulate blood sugar

Release adrenaline

Store glucose

Negative feedback loop

Positive feedback loop

Neutral feedback loop

Direct feedback loop

Negative feedback stops hormone release, while positive feedback increases hormone release.

Negative feedback increases hormone release, while positive feedback stops hormone release.

Both negative and positive feedback stop hormone release.

Both negative and positive feedback increase hormone release.