The hind limb of a human consists of 30 bones. 

1. Pelvis (2 bones):

   • Hip bone (each side)

2. Thigh (1 bone):

   • Femur

3. Knee (1 bone):

   • Patella (kneecap)

4. Leg (2 bones):

   • Tibia (shin bone)
   • Fibula

5. Ankle (7 bones):

   • Tarsals (Calcaneus, Talus, Navicular, Cuboid, and three Cuneiform bones)

6. Foot (14 bones):

   • Metatarsals (5 bones)
   • Phalanges (toes; 14 bones total: 2 in the big toe and 3 in each of the other four toes)

This totals to 30 bones in the hind limb.

The number of bones in the human ankle is 7. These bones are known as the tarsal bones and include:

1. Talus
2. Calcaneus (heel bone)
3. Navicular
4. Cuboid
5. Medial cuneiform
6. Intermediate cuneiform
7. Lateral cuneiform

These bones together form the ankle joint and provide support and mobility to the foot.

Normal blood pressure in adults is typically around 120/80 mmHg. This reading consists of two numbers:

• Systolic pressure (the first number, 120): the pressure in the arteries when the heart beats.
• Diastolic pressure (the second number, 80): the pressure in the arteries when the heart is at rest between beats.

Blood pressure can vary based on individual health, age, and other factors. Generally, blood pressure readings below 120/80 mmHg are considered normal, while readings above 130/80 mmHg may indicate elevated blood pressure or hypertension.

The normal pH range of human blood is typically between 7.35 and 7.45. This slightly alkaline range is crucial for maintaining various physiological processes. Deviations from this range can lead to conditions such as:

• Acidosis: A pH below 7.35, which can result from respiratory or metabolic issues.
• Alkalosis: A pH above 7.45, which can also be caused by respiratory or metabolic disorders.

The body regulates blood pH through various mechanisms, including respiration and renal function, to maintain homeostasis.

The human spine is composed of 33 vertebrae, which are categorized into different regions:

1. Cervical Vertebrae: 7 vertebrae (C1-C7)
2. Thoracic Vertebrae: 12 vertebrae (T1-T12)
3. Lumbar Vertebrae: 5 vertebrae (L1-L5)
4. Sacral Vertebrae: 5 fused vertebrae (forming the sacrum)
5. Coccygeal Vertebrae: 4 fused vertebrae (forming the coccyx or tailbone)

After fusion in adults, the total count for individual vertebrae is typically considered as 24 movable vertebrae (cervical, thoracic, and lumbar) along with the fused sacral and coccygeal vertebrae.

The neck contains 7 cervical vertebrae, labeled C1 through C7. These vertebrae support the skull and allow for a range of motion in the head and neck.