pineal gland

https://sleeppsychiatrist.com/blog/pineal-gland-function-how-it-produces-melatonin-regulates-sleep/ 

Pineal Gland Function (Simple Explanation)

• The pineal gland is a small gland in the brain.

• Its main job is to make a hormone called melatonin.

• Melatonin helps control your sleep–wake cycle (when you feel sleepy and when you wake up).

• The pineal gland releases more melatonin when it is dark, so you feel sleepy at night.

• It releases less melatonin when it is light, so you feel awake during the day.

• The pineal gland also helps regulate biological rhythms such as body temperature and hormone cycles.

• It may also play a small role in mood, seasonal changes, and puberty timing.

 

⭐ Human Organs From Head to Toe (Simple List)

1. Head / Brain Area

• Brain

• Cerebrum

• Cerebellum

• Brainstem

• Pituitary gland

• Pineal gland

• Hypothalamus

• Eyes (2)

• Ears (2)

• Nose

• Tongue

• Salivary glands (parotid, submandibular, sublingual)

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2. Neck

• Pharynx

• Larynx

• Trachea (upper part)

• Esophagus (upper part)

• Thyroid gland

• Parathyroid glands (4)

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3. Chest (Thorax)

• Lungs (2)

• Heart

• Thymus

• Esophagus (middle part)

• Trachea (lower part)

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4. Abdomen

• Stomach

• Liver

• Gallbladder

• Pancreas

• Spleen

• Small intestine

  • Duodenum

  • Jejunum

  • Ileum

• Large intestine

  • Cecum

  • Ascending colon

  • Transverse colon

  • Descending colon

  • Sigmoid colon

  • Rectum

• Kidneys (2)

• Ureters (2)

• Adrenal glands (2)

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5. Pelvis

• Urinary bladder

• Urethra

Female

• Ovaries (2)

• Fallopian tubes (2)

• Uterus

• Cervix

• Vagina

Male

• Testes (2)

• Epididymis (2)

• Vas deferens (2)

• Prostate gland

• Seminal vesicles (2)

• Penis (organ)

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6. Skin & Musculoskeletal Organs

These are body-wide organs:

• Skin (largest organ)

• Bones (206 total, each is an organ)

• Muscles (over 600, each is an organ)

• Cartilage

• Bone marrow

• Blood vessels (arteries, veins, capillaries)

• Lymph nodes

 

Question: 55 of 70

CORRECT

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Where are nutrients absorbed when transported into the bloodstream?

Stomach

The stomach is not where nutrients are absorbed into the bloodstream. The digestion of food begins in the stomach.

Gallbladder

The gallbladder is not where nutrients are absorbed into the bloodstream. The gallbladder stores and releases bile when fat is in the duodenum.

Pancreas

The pancreas is not where nutrients are absorbed into the bloodstream. The pancreas produces glucogon and insulin to regulate metabolism.

Small intestine

MY ANSWER

The small intestine has three functions: peristalsis, digestion, and absorption of nutrients into the bloodstream. The small intestine transports nutrients either to the liver or target cells, where the nutrients are metabolized.

pia mater is covering the brain

 

Question: 54 of 70

INCORRECT

• Time Remaining: 06:05:08
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Which of the following is the correct order of the protective meningeal layers of the brain from inside to outside?

Dura mater, pia mater, arachnoid

MY ANSWER

This is not the correct order of meningeal layers from inside to outside.

Arachnoid, dura mater, pia mater

This is not the correct order of meningeal layers from inside to outside.

Pia mater, arachnoid, dura mater

The pia mater is the brain covering; the arachnoid is in the middle; the dura mater is the lining of the skull.

Arachnoid, pia mater, dura mater

This is not the correct order of meningeal layers from inside to outside.