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-The cerebellum is the part of the brain associated with the regulation and coordination of movement, posture, and balance

• 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

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.

bile absorbed by ileum

 

Question: 53 of 70

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Question: 53 of 70

INCORRECT

• Time Remaining: 06:06:52
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Which of the following structures of the gastrointestinal system absorbs iron and bile salts?

Ileum

The ileum is the structure of the gastrointestinal system that absorbs iron and bile salts.

Jejunum

The jejunum is not the structure that absorbs iron and bile salts.

Colon

The colon is not the structure that absorbs iron and bile salts.

Duodenum

MY ANSWER

The duodenum is not the structure that absorbs iron and bile salts.

Which of the following structures of the gastrointestinal system absorbs iron and bile salts?

Ileum

Jejunum

Colon

Duodenum